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Littérature scientifique sur le sujet « VOCs pollution »

Auteur : Grafiati

Publié le 15 septembre 2023

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Articles de revues sur le sujet "VOCs pollution"

Carmen, Florean, Henriette Szilagyi et Andreea Hegyi. « Environment and Pollution Management of Pollution Volatile Organic Compounds in Cluj-Napoca ». Present Environment and Sustainable Development 10, n^o 2 (1 octobre 2016) : 207–17. http://dx.doi.org/10.1515/pesd-2016-0038.

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Abstract Pollution negative influences the environmental, human health, buildings and increase the production of waste. We are currently witnessing pollution and degradation in some cases irreversible, of the environment. Environmental issues are extremely complex and cover all sectors. Worldwide, industrial pollution strategies necessary to reduce emissions to the atmosphere hydrocarbons, volatile organic compounds (VOCs) and other polluants in urban areas. The highest concentrations of volatile organic compounds of more than 80 mg/m3 occur in densely populated areas. The latest data reported in the residential area of Cluj-Napoca values did not exceed 20 m /m3. However peaks reported VOC concentrations, depending on the season, exceeding the upper limit that according to Law. 104/2011 is 75 μ/m3. It was identified due to increase annual mean concentration of VOCs as, in particular, road traffic exceeding sanitary standards on the main traffic routes within the city. In this paper the results obtained after carrying out an analysis of the average VOC concentration recorded in the city Cluj-Napoca as a result of car traffic. They were pursued average concentrations of VOCs resulting from the combustion of liquid fuels, petrol and diesel type. Analyzing the results obtained are proposed solutions for reducing VOC emissions. The rule under which these solutions have been proposed to reduce the concentration of VOCs took into account the possibility implementation and maintenance costs thereof.

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Cui, Lulu, Di Wu, Shuxiao Wang, Qingcheng Xu, Ruolan Hu et Jiming Hao. « Measurement report : Ambient volatile organic compound (VOC) pollution in urban Beijing : characteristics, sources, and implications for pollution control ». Atmospheric Chemistry and Physics 22, n^o 18 (15 septembre 2022) : 11931–44. http://dx.doi.org/10.5194/acp-22-11931-2022.

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Abstract. The increasing ozone (O3) pollution and high fraction of secondary organic aerosols (SOA) in fine particle mass has highlighted the importance of volatile organic compounds (VOCs) in air pollution control. In this work, four intensive field measurements of VOCs during winter of 2018 (from 1 December 2018 to 17 January 2019), spring (15 April to 27 May), summer (17 June to 13 July), and autumn (22 September to 27 November) of 2019 were conducted at an urban site in Beijing to characterize VOC sources and their contributions to air pollution. The total mixing ratio of the 95 quantified VOCs (TVOC) observed in this study ranged from 5.5–118.7 ppbv with the mean value of 34.9 ppbv. Alkanes, OVOCs, and halocarbons were the dominant chemical groups, accounting for 75 %–81 % of the TVOC across the sampling months. The molar ratios of VOCs to NOx indicated that O3 formation was limited by VOCs during the whole sampling period. Positive matrix factorization (PMF) analysis showed that diesel vehicle exhaust, gasoline vehicle exhaust, and industrial emissions were the main VOC sources during both the O3-polluted and PM2.5-polluted months. On the basis of O3 formation impact, VOCs from fuel evaporation and diesel exhaust, particularly toluene, xylenes, trans-2-butene, acrolein, methyl methacrylate, vinyl acetate, 1-butene, and 1-hexene, were the main contributors, illustrating the necessity of conducting emission controls on these pollution sources and species to alleviate O3 pollution. Instead, VOCs from diesel exhaust as well as coal and biomass combustion were found to be the dominant contributors to secondary organic aerosol formation potential (SOAFP), particularly the VOC species of toluene, 1-hexene, xylenes, ethylbenzene, and styrene, and top priority should be given to these for the alleviation of haze pollution. This study provides insights for the government to formulate effective VOC control measures for air pollution in Beijing.

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Wang, Qi, Chēn Wang, Lujian Hou, Bo Lv et Chén WANG. « Pollution data analysis and characteristics of volatile organic compounds in the environment ». E3S Web of Conferences 38 (2018) : 01004. http://dx.doi.org/10.1051/e3sconf/20183801004.

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Volatile organic compounds (VOCs) have a wide range of sources and have a significant impact on the ecological environment and human health, which have attracted wide attention of many researchers. In this paper, the pollution characteristics of VOCs, the role of VOCs in atmospheric chemistry including OH reaction reactivity (LOH), Ozone Formation Potential (OFP) and SOA generation potential (SOAP), VOCs source apportionment were discussed and reviewed.

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Ma, Wei, Zemin Feng, Junlei Zhan, Yongchun Liu, Pengfei Liu, Chengtang Liu, Qingxin Ma et al. « Influence of photochemical loss of volatile organic compounds on understanding ozone formation mechanism ». Atmospheric Chemistry and Physics 22, n^o 7 (12 avril 2022) : 4841–51. http://dx.doi.org/10.5194/acp-22-4841-2022.

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Abstract. Volatile organic compounds (VOCs) tend to be consumed by atmospheric oxidants, resulting in substantial photochemical loss during transport. An observation-based model was used to evaluate the influence of photochemical loss of VOCs on the sensitivity regime and mechanisms of ozone formation. Our results showed that a VOC-limited regime based on observed VOC concentrations shifted to a transition regime with a photochemical initial concentration of VOCs (PIC-VOCs) in the morning. The net ozone formation rate was underestimated by 3 ppb h−1 (∼36 ppb d−1) based on the measured VOCs when compared with the PIC-VOCs. The relative contribution of the RO2 path to ozone production based on the PIC-VOCs accordingly increased by 13.4 %; in particular, the contribution of alkene-derived RO2 increased by approximately 10.2 %. In addition, the OH–HO2 radical cycle was obviously accelerated by highly reactive alkenes after accounting for photochemical loss of VOCs. The contribution of local photochemistry might be underestimated for both local and regional ozone pollution if consumed VOCs are not accounted for, and policymaking on ozone pollution prevention should focus on VOCs with a high reactivity.

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Liu, Hefan, Ning Wang, Dongyang Chen, Qinwen Tan, Danlin Song et Fengxia Huang. « How Photochemically Consumed Volatile Organic Compounds Affect Ozone Formation : A Case Study in Chengdu, China ». Atmosphere 13, n^o 10 (20 septembre 2022) : 1534. http://dx.doi.org/10.3390/atmos13101534.

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Surface ozone (O3) pollution has not improved significantly in recent years. It is still the primary air pollution problem in many megacities in China during summertime. In high temperature and intense radiation weather, volatile organic compounds (VOCs) are easily oxidized and degraded to induce O3 pollution. In order to understand the impact of difference between photochemical initial concentration (PIC) of VOCs and the actual measured concentration on O3 formation, a campaign was carried out during O3 pollution in Chengdu (25 July–5 August 2021). During this O3 pollution episode, the maximum value of O3 concentration reached 335.0 μg/m3, and the precursor concentrations increased significantly. The mean values of VOCmeasured and VOCPICs were 19.7 ppbv and 30.7 ppbv, corresponding to O3 formation potential (OFP) of 175.3 μg/m3 and 478.8 μg/m3, respectively, indicating that the consumption of VOCs content could not be ignored. Alkenes accounted for 77.2% of VOCs consumption. Alkenes and aromatics contributed 63.0% and 29.2% to OFP values which derived from PIC of each VOC species. The relative incremental reactivity analysis based on PICs showed that the O3 formation was controlled by the cooperation of nitrogen oxides (NOx) and VOCs, and the effect of NOx emission reduction was better.

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Xue, Yonggang, Yu Huang, Steven Sai Hang Ho, Long Chen, Liqin Wang, Shuncheng Lee et Junji Cao. « Origin and transformation of ambient volatile organic compounds during a dust-to-haze episode in northwest China ». Atmospheric Chemistry and Physics 20, n^o 9 (8 mai 2020) : 5425–36. http://dx.doi.org/10.5194/acp-20-5425-2020.

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Abstract. The high contribution of secondary organic aerosol to the loading of fine particle pollution in China highlights the roles of volatile organic compound (VOC) oxidation. In this respect, particulate active metallic oxides in dust, like TiO2 and Fe ions, were proposed to influence the photochemical reactions of ambient VOCs. A case study was conducted at an urban site in Xi'an, northwest China, to investigate the origin and transformation of VOCs during a windblown dust-to-haze pollution episode, and the assumption that dust would enhance the oxidation of VOCs was verified. Local vehicle exhaust (25 %) and biomass burning (18 %) were found to be the two largest contributors to ambient VOCs. In the dust pollution period, a sharp decrease in the loading of VOCs and the aging of their components were observed. Simultaneously, the secondary oxygenated VOC fraction (i.e., methylglyoxal) increased. Source strength, physical dispersion, and regional transport were eliminated as major factors for the variation of ambient VOCs. In another aspect, about a 2- to 3-fold increase in the loading of iron (Fe) and titanium (Ti) was found in the airborne particles, together with a fast decrease in trans-/cis-2-butene ratios, which demonstrated that dust can accelerate the oxidation of ambient VOCs and the formation of secondary organic aerosol (SOA) precursors.

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Vanderplanck, Maryse, Benoît Lapeyre, Margot Brondani, Manon Opsommer, Mathilde Dufay, Martine Hossaert-McKey et Magali Proffit. « Ozone Pollution Alters Olfaction and Behavior of Pollinators ». Antioxidants 10, n^o 5 (21 avril 2021) : 636. http://dx.doi.org/10.3390/antiox10050636.

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Concentration of air pollutants, particularly ozone (O3), has dramatically increased since pre-industrial times in the troposphere. Due to the strong oxidative potential of O3, negative effects on both emission and lifetime in the atmosphere of plant volatile organic compounds (VOCs) have already been highlighted. VOCs alteration by O3 may potentially affect the attraction of pollinators that rely on these chemical signals. Surprisingly, direct effects of O3 on the olfaction and the behavioral response of pollinators have not been investigated so far. We developed a comprehensive experiment under controlled conditions to assess O3 physiological and behavioral effects on two pollinator species, differing in their ecological traits. Using several realistic concentrations of O3 and various exposure times, we investigated the odor antennal detection and the attraction to VOCs present in the floral scents of their associated plants. Our results showed, in both species, a clear effect of exposure to high O3 concentrations on the ability to detect and react to the floral VOCs. These effects depend on the VOC tested and its concentration, and the O3 exposure (concentration and duration) on the pollinator species. Pollination systems may, therefore, be impaired in different ways by increased levels of O3, the effects of which will likely depend on whether the exposure is chronic or, as in this study, punctual, likely causing some pollination systems to be more vulnerable than others. While several studies have already shown the negative impact of O3 on VOCs emission and lifetime in the atmosphere, this study reveals, for the first time, that this impact alters the pollinator detection and behavior. These findings highlight the urgent need to consider air pollution when evaluating threats to pollinators.

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Cordell, Rebecca L., Rikesh Panchal, Emmanuel Bernard, Michael Gatari, Ezekiel Waiguru, Moses Ng’ang’a, James Nyang’aya et al. « Volatile Organic Compound Composition of Urban Air in Nairobi, Kenya and Lagos, Nigeria ». Atmosphere 12, n^o 10 (12 octobre 2021) : 1329. http://dx.doi.org/10.3390/atmos12101329.

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Sub-Saharan Africa is seeing rapid urbanization, with the population of cities such as Lagos and Nairobi growing at a rate of 3–4% a year. The region is extremely under-sampled for all air pollutants, particularly VOCs, which are useful markers for source apportionment as well as toxic in their own right. There are many contributors to air pollution in the region, and studies examining fine particulate pollution implicate traffic as the primary source in urban areas. In this pilot study, VOCs were analysed at a selection of roadside and urban background locations in Nairobi and Lagos, and 74 VOCs were quantified. GC×GC–MS/FID analysis revealed all locations were dominated by hydrocarbons typical of vehicle emissions, with the aromatic hydrocarbons benzene and toluene among the most abundant VOCs. Typical personal exposure scenarios for citizens of the cities were calculated to far exceed those of a resident in a city in Europe/US. Finally, the calculated ozone forming potential of the VOCs measured was found to be similarly high to other large cities studied with similar air pollution problems. Further study is therefore essential to determine the full extent of VOC pollution in the region and its impact on tropospheric chemistry.

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Alvarez-Vaca, Daniel, Radu Corneliu Duca, Alicia Borras-Santos, Emilie Hardy, Matteo Creta, Carole Eicher, Laurence Wurth, Anne Vergison et An Van Nieuwenhuyse. « Surveillance of Indoor Air Concentration of Volatile Organic Compounds in Luxembourgish Households ». International Journal of Environmental Research and Public Health 19, n^o 9 (30 avril 2022) : 5467. http://dx.doi.org/10.3390/ijerph19095467.

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Exposure to air pollution is a well-known health risk. For instance, volatile and very volatile organic compounds (VOCs and VVOCs) are known to cause respiratory, haematologic or immune diseases, and even cancer. Based on the Luxembourgish indoor pollution surveillance program, we performed an exploratory analysis for the period 2014–2019, in order (1) to evaluate the prevalence of VOCs and VVOCs in households, and (2) to estimate the risks of lifelong exposure to selected VOCs on the health of the adult population. The database included 715 indoor air samples from 159 different households. Observed VOC and VVOC levels were similar to those in neighbouring countries. Our health impact assessment identified some health risks associated with the observed concentrations in Luxembourg. Furthermore, this study shows the major public health importance of having a national indoor pollution surveillance system in place. Highlights: (1) This study provides an overview of the domestic indoor pollution in Luxembourg. (2) (V)VOCs levels in Luxembourg were similar to those in neighbouring countries. (3) The results clearly show the importance of having a surveillance system in place.

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Du, Zhao, Xiang Ling Yuan, Ai Ling Ren et Feng Ying Fu. « Typical Pharmaceutical Process VOCs and Stench Pollution Characteristics and Control Techniques ». Advanced Materials Research 726-731 (août 2013) : 2017–21. http://dx.doi.org/10.4028/www.scientific.net/amr.726-731.2017.

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According to the pharmaceutical industry produce VOCs and stench of atmospheric environment pollution, combined with typical pharmaceutical biological fermentation and chemical synthesis process of VOCs and odour pollution are classified 4 types:fermentation tail gas, recycling of exhaust gas, exhaust gas and wastewater workshop stench. The control technology should be selected according to the four types of waste characteristics.

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Thèses sur le sujet "VOCs pollution"

Land, Eva Miriam. « Photocatalytic degradation of NOX, VOCs, and chloramines by TiO2 impregnated surfaces ». Thesis, Georgia Institute of Technology, 2010. http://hdl.handle.net/1853/34857.

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Experiments were conducted to determine the photocatalytic degradation of three types of gas-phase compounds, NOX, VOCs, and chloramines, by TiO2 impregnated tiles. The oxides of nitrogen NO and NO2 (NOx) have a variety of negative impacts on human and environmental health ranging from serving as key precursors for the respiratory irritant ozone, to forming nitric acid, which is a primary component of acid rain. A flow tube reactor was designed for the experiments that allowed the UV illumination of the tiles under exposure to both NO and NO2 concentrations in simulated ambient air. The reactor was also used to assess NOx degradation for sampled ambient air. The PV values for NO and NO2 were 0.016 cm s-1 and 0.0015 cm s-1, respectively. For ambient experiments a decrease in ambient NOx of ~ 40% was observed over a period of roughly 5 days. The mean PV for NOx for ambient air was 0.016 cm s-1 and the maximum PV was .038 cm s-1. Overall, the results indicate that laboratory conditions generally simulate the efficiency of removing NOx by TiO2 impregnated tiles. Volatile organic compounds (VOC's) are formed in a variety of indoor environments, and can lead to respiratory problems (US EPA, 2010). The experiments determined the photocatalytic degradation of formaldehyde and methanol, two common VOCs, by TiO2 impregnated tiles. The same flow tube reactor used for the previous NOX experiments was used to test a standardized gas-phase concentration of formaldehyde and methanol. The extended UV illumination of the tiles resulted in a 50 % reduction in formaldehyde, and a 68% reduction in methanol. The deposition velocities (or the photocatalytic velocities, PV) were estimated for both VOC's. The PV for formaldehyde was 0.021 cm s-1, and the PV for methanol was 0.026 cm s-1. These PV values are slightly higher than the mean value determined for NO from the previous experiments which was 0.016 cm s-1. The results suggest that the TiO2 tiles could effectively reduce specific VOC levels in indoor environments. Chlorination is a widespread form of water disinfection. However, chlorine can produce unwanted disinfection byproducts when chlorine reacts with nitrogen containing compounds or other organics. The reaction of chlorine with ammonia produces one of three chloramines, (mono-, di-, and tri-chloramine). The production of chloramines compounds in indoor areas increases the likelihood of asthma in pool professionals, competitive swimmers, and children that frequently bath in indoor chlorinated swimming pools (Jacobs, 2007; Nemery, 2002; Zwiener, 2007). A modified flow tube reactor in conjunction with a standardized solution of monochloramine, NH2Cl, determined the photocatalytic reactions over the TiO2 tiles and seven concrete samples. The concrete samples included five different concrete types, and contained either 5 % or 15 % TiO2 by weight. The PV for the tiles was 0.045 cm s-1 for the tiles manufactured by TOTO Inc. The highest PV from the concrete samples was 0.054 cm s-1. Overall the commercial tiles were most efficient at reducing NH2Cl, compared to NOX and VOC compounds. However, the concrete samples had an even higher PV for NH2Cl than the tiles. The reason for this is unknown; however, distinct surface characteristics and a higher concentration of TiO2 in the concrete may have contributed to these findings.

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Won, Doyun. « The effects of adsorptive sinks on human exposure to VOCs in indoor air / ». Digital version accessible at:, 1999. http://wwwlib.umi.com/cr/utexas/main.

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Vice, Scott Jackson. « Indicators of Mold Growth in Indoor Environments ». Thesis, Virginia Tech, 2000. http://hdl.handle.net/10919/35048.

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The following investigation stems from the idea of using metabolic byproducts produced by mold as indicators of its presence in indoor environments in place of investigating airborne fungi by traditional particulate sampling techniques. VOCs and carbon dioxide are both examined in order to evaluate their usefulness as possible metabolic indicators of mold growth. A specially designed purge and trap laboratory setup was built and operated for the study of molds growing on specific media. Key variables for the operation of the apparatus include sampling time and sampling flow rate as well as other environmental conditions such as temperature. Carbon dioxide serves as a good marker for fungal activity, but is difficult to attribute to mold growth when studying non-closed loop systems. Many VOCs were collected but detection limits were often too high for the quantities collected.
Master of Science

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Saffarian, Saman. « A LCA Study of Activated Carbon Adsorption and Incineration in Air Pollution Control ». Thesis, Högskolan i Borås, Institutionen Ingenjörshögskolan, 2010. http://urn.kb.se/resolve?urn=urn:nbn:se:hb:diva-19680.

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The main purpose of this thesis was to compare GAC adsorption method, VOCs incinerationmethod and Non-treatment alternative by using LCA to find which method or alternative isenvironmentally preferable. The LCA framework proposed by ISO 14040 (1997) has beenconsidered in this research. The comparison was made by considering a flue gas contaminatedby toluene (with three different concentration 100, 1000, 2000 mg/m3). The plant locationwhere the polluted flue gas is emitted has been assumed to be located in Borås, Sweden. Theflow rate of emitted flue gas was 10000m3/hr. The present thesis report contains two mainparts.The results of LCA showed that when the toluene concentration is low (< 100 mg/m3), GACadsorption method, Non-treatment alternative and VOCs incineration method are respectivelypreferable from environmental point of view. On the other side, when the tolueneconcentration of inlet stream is high (>1000 mg/m3), the order of GAC adsorption method,incineration and Non-treatment alternative is more desirable. Furthermore, the resultsillustrated that as toluene plays the role of fuel as a hydrocarbon, VOCs incineration methodis much more suitable when toluene concentration is high due to lower demand on additionalfuel. In the other words, high toluene concentration of influent leads to less environmentalimpact when VOCs incineration method is exploited. Conversely, the environmental impactof GAC adsorption method is increased when the inlet concentration of toluene is escalated.In overall, the weighted result showed that GAC adsorption method is the most preferablemethod while Non-treatment alternative is the worst.

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Santos, Rafaela Souza. « Estudo da composição de material particulado e compostos orgânicos voláteis no ar em Catalão - GO ». Universidade Federal de Goiás, 2015. http://repositorio.bc.ufg.br/tede/handle/tede/5121.

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The issue of pollution is not new. The burning of biomass used for heat generation already was beginning to anthropogenic processes of air pollution. The pollutants are in the atmosphere in solid, liquid and gaseous state. The set of solid and liquid particles is called particulate matter (PM), and the other form the set of gaseous pollutants. The MP covers a range of 0.1-100 microns and varies greatly in size composition, emission sources and adverse effects on health. The gaseous compounds are formed mostly of volatile organic compounds (VOCs), which are organic compounds which are gaseous at room temperature. These pollutants can be emitted by natural and anthropogenic sources, among which stand out the combustion processes and soil dust resuspension by wind action. The city of Catalão - GO has grown greatly in recent years, mainly due to the arrival of mining in the city exploring the carbonatite complexes Catalão I and Catalão II. The aim of this study was to monitor the atmospheric air in a region of the city of Catalan through the sampling and analysis of PM and VOCs. Samples MP, which occurred every six days over a period of 24 hours, were carried out for TSP, PM10 and PM2,5 in HI-VOL samplers suitable for each particle size. Gravimetric analysis indicated that the measured concentrations are in accordance with the standards set by law. The elementary MP analysis was performed by EDXRF technique and indicated that the elements present are mostly from vehicle emissions and resuspended soil dust by the wind. Sampling was performed by VOCs microextraction technique of solid phase (SPME - solid phase microextraction) twice a week for 12 hours. The analysis of the sampled VOCs was performed by gas chromatography-mass spectrometry (GC / MS - gas chromatography mass spectrometry) in which the compounds were identified by comparison with a NIST library / MS (National Institute of Standards and Technology / Mass Spectral) present in the equipment. The identification of these compounds indicated a strong influence of vehicle emissions in the composition of atmospheric air.
A questão da poluição não é algo recente. A queima de biomassa utilizada para geração de calor já dava início aos processos antrópicos de poluição atmosférica. Os poluentes encontram-se na atmosfera nos estados sólido, líquido e gasoso. O conjunto das partículas sólidas e líquidas constitui o chamado material particulado (MP), e as demais formam o conjunto de poluentes gasosos. O MP abrange uma faixa de tamanho entre 0,1-100 e varia em tamanho, composição, fontes de emissão e efeitos adversos causados a saúde. Os compostos gasosos são formados em sua maioria pelos compostos orgânicos voláteis (COVs), que são compostos orgânicos que encontram-se no estado gasoso em temperatura ambiente. Esses poluentes podem ser lançados na atmosfera por fontes naturais e antrópicas, dentre as quais destacam-se os processos de combustão e ressuspensão da poeira do solo por ação dos ventos. A cidade de Catalão GO tem crescido bastante nos últimos anos, principalmente devido a chegada de mineradoras na cidade que exploram os complexos carbonatíticos de Catalão I e Catalão II. O objetivo deste trabalho foi realizar o monitoramento do ar atmosférico em uma região da cidade de Catalão pela amostragem e análise de MP e COVs. As amostragens de MP, que aconteceram a cada seis dias por um período de 24 horas, foram realizadas para PTS, MP10 e MP2,5 em amostradores de grande volume adequados para cada tamanho de partícula. A análise gravimétrica indicou que os as concentrações medidas estão de acordo com os padrões definidos pela legislação. A análise elementar do MP foi realizada pela técnica de EDXRF e indicou que os elementos presentes são, em sua maioria, provenientes da emissão veicular e poeira ressuspensa do solo pela ação dos ventos. A amostragem dos COVs foi realizada pela técnica de microextração por fase sólida (SPME do inglês solid phase microextraction), duas vezes por semana por 12 horas. A análise dos COVs amostrados foi realizada por cromatografia gasosa acoplada a espectrometria de massas (GC / MS - do inglês gas chromatography mass spectrometry) em que os compostos foram identificados por comparação com a biblioteca NIST / MS (Nacional Institute of Standard and Technology / Mass Spectral) presente no equipamento. A identificação desses compostos indicou uma forte influência das emissões veiculares na composição do ar atmosférico.

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Hunter, Paige Holt. « Control of Volatile Organic Compound (VOC) Air Pollutants ». Diss., Virginia Tech, 2000. http://hdl.handle.net/10919/38614.

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A variety of methods exist to remove volatile organic compound (VOC) air pollutants from contaminated gas streams. As regulatory and public opinion pressures increase, companies are searching for more effective methods to control these emissions. This document is intended as a guide to help determine if existing systems are adequate and to provide additional information to improve the efficiency of the systems. It explores conventional methods of controlling VOC emissions, as well as innovative technologies including membrane separation, plasma destruction, and ozone catalytic oxidation. The conventional technologies covered include condensation, adsorption, absorption (or scrubbing), thermal incineration, flaring, catalytic incineration, and biofiltration. Each chapter includes a description of the technology, a discussion of the types of systems available, notes on the design of the system, economic estimates, an explanation of potential problems, and a list of considerations for installation and maintenance concerns. The final chapter is dedicated to the preparation and characterization of metal catalysts which were developed to improve the reaction rate of VOCs using ozone as an oxidant.
Ph. D.

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Vincent, Guillaume. « Procédé d'élimination de la pollution de l'air par traitement photocatalytique : application aux COVs ». Thesis, Vandoeuvre-les-Nancy, INPL, 2008. http://www.theses.fr/2008INPL037N/document.

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L’oxydation photocatalytique des Composés Organiques Volatils (COVs) apparaît comme un procédé très prometteur pour la réduction de la pollution atmosphérique. Ce travail avait pour objectif d’étudier l’oxydation photocatalytique de plusieurs COVs au sein d’un réacteur annulaire: méthyléthylcétone (MEK), acétone, 1-propanol ou encore triéthylamine (TEA). Dans une première partie, l’influence de plusieurs paramètres cinétiques tels que la concentration en polluant, l’intensité lumineuse, le temps de contact et le taux d’humidité a été étudiée. Un mécanisme de dégradation photocatalytique a été établi pour chaque polluant en fonction des sous-produits détectés par GC/MS. Dans une seconde partie, la diffusion de radicaux hydroxyles OH• dans la phase gazeuse, après activation photonique du TiO2, a été mise en évidence par Fluorescence Induite par Laser (LIF). Pour la première fois, ces radicaux OH• ont été détectés à des pressions proches des conditions atmosphériques. Dans ce cas, nous pouvons en conclure que la dégradation photocatalytique des COVs pourrait être partiellement due à une réaction en phase gazeuse entre les COVs et les radicaux OH•
Photocatalytic oxidation of airborne contaminants appears to be a promising process for remediation of air polluted by Volatile Organic Compounds (VOCs). The aim of our study is the photocatalytic oxidation of several VOCs using an annular reactor: methylethylketone (MEK), acetone, 1-propanol and triethylamine (TEA). First, the influence of different kinetic parameters such as pollutant concentration, incident light irradiance, contact time and humidity has been studied. A mechanistic pathway has been indeed proposed for each pollutant according to the produced intermediates species detected by GC/MS. Second, the diffusion of hydroxyls radicals OH• in gas phase, after photonic activation of TiO2, has been highlighted using Laser-Induced Fluorescence (LIF). For the first time, OH• radicals have been detected at atmospheric pressures, close to the major photocatalytic oxidation conditions, leading to the assumption that the photocatalytic degradation of VOCs might be at least partially occurs between pollutants and OH• radicals in gas-phase

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Monteiro, Mônica Domingues. « Avaliação das concentrações de BTEX em ambiente indoor : estudo de caso da sala de spinning de uma academia de ginástica Rio de Janeiro / RJ ». Universidade do Estado do Rio de Janeiro, 2011. http://www.bdtd.uerj.br/tde_busca/arquivo.php?codArquivo=4477.

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Muitos dos locais onde as atividades são realizadas nas academias de ginásticas são salas pequenas e fechadas com sistema de climatização artificial, freqüentados por um grande número de alunos realizando seus exercícios e profissionais auxiliando as atividades. Com isso, há uma intensa transpiração desses indivíduos, uma freqüente rotina de limpeza do piso e de equipamentos com pequenos intervalos, possibilitando a alterações da qualidade do ar indoor. O presente trabalho busca mostrar as tendências de variações nos valores das concentrações dos poluentes atmosféricos BTEX em ambiente indoor, especificamente na sala de spinning de uma academia de ginástica do Rio de Janeiro. Para o monitoramento da qualidade do ar foram utilizados cartuchos de carvão ativado SKC, acoplado a uma bomba KNF com vazão de 1l min. Para a extração de cada amostra foi feita a análise cromatográfica com cromatógrafo a gás modelo 6890 acoplado a um espectrômetro de massa modelo 5973 da marca Agilent. Foram analisadas 34 amostras coletadas na salas de spinning durante as aulas com atividades aeróbicas, o que intensificava a respiração dos indivíduos, possibilitando uma maior inalação destes COVs. Em contrapartida, também foram coletadas 5 amostras outdoor, 4 delas pareadas indoor/ outdoor para uma análise comparativa das concentrações destes poluentes. Dentre os compostos orgânicos voláteis analisados, o tolueno é o BTEX mais abundante obtido neste trabalho, representando 81% destes COVs indoor. Todas as amostras medidas em pares indoor/ outdoor tiveram concentrações maiores no interior, exceto para o benzeno no dia 3/12/2010. Simples atividades usualmente realizadas pelo homem, como a inserção de piso emborrachado, manutenção do sistema de climatização artificial, e limpeza podem alterar o ar indoor. As conclusões alcançadas após as medições das concentrações de BTEX foram de que o ar indoor estava mais poluído do que o outdoor. Este monitoramento da qualidade do ar indoor ainda é escasso no Brasil. Alguns esforços tem sido feito em relação a ambientes confinados como a Portaria n˚3523 do Ministério da Saúde, regulamentando o controle dos ambientes climatizados e a Resolução n˚9 da Agência Nacional de Vigilância Sanitária, além da Resolução CONAMA n ˚3 estabelecendo padrões de qualidade do ar para alguns compostos químicos, porém muitos compostos químicos ainda não são legislados ou não possuem a devida atenção, não sendo suficientes para contemplar a complexidade do assunto
In many gyms work-out activities take place in small enclosed rooms where the climate is controlled artificially. Normally, those rooms are full of students doing their workout and trainers helping them. Intense human transpiration requires a frequent floor and equipment cleaning routine. This routine, performed at short intervals can affect the indoor air quality. This study is aimed at showing varying concentration levels of the BTEX air pollutant at a gym in Rio de Janeiro, Brazil, specifically the spinning room. To monitor the air quality, activated charcoal cartridges (SKC) were used, coupled to a KNF pump with a flow rate of 1l min. For the extraction of each sample, a gas chromatographic analysis machine model 6890 was used coupled to an Agilent mass spectrometer model 5973. We analyzed a total of 34 air samples collected in the spinning room during active aerobic classes; the increased respiration from the subjects allow for a greater inhalation of VOCs. In Contrast, five samples were also collected outdoors; four of them were paired indoor / outdoor for comparative analysis of these pollutants. Among the volatile organic compounds analyzed, toluene was the most abundant BTEX found in this study, representing 81% of indoor VOCs. In all the indoor / outdoor paired samples, the concentration was higher in the interior samples, with one exception, benzene on 3/12/2010. Simple changes that can easily be done by man, such as the installation of rubberized flooring, regular maintenance of the air acclimatization equipment, and general cleanliness can greatly affect the indoor air quality. The conclusion achieved after looking at the BTEX measurements was that the indoor air was more polluted than the air outdoors. This air quality monitoring is still scarce in Brazil. Some efforts have been made in relation to confined spaces such as Ordinance n˚ 3523 from the Ministry of Health, which regulates the air of air-conditioned environments and Resolution n˚ 9 of the National Agency for Sanitary Vigilance, as well as Resolution CONAMA n˚ 3 by setting standards for air quality for some chemical compounds, unfortunately many chemical compounds are not yet legislated or receive proper attention in this matter, therefore not giving this indoor air pollution matter enough grounds to address the complexity of the subject

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Dubuisson, Candice. « Impact de la pollution atmosphérique par l’ozone sur la communication chimique plante-pollinisateur : le cas de deux interactions emblématiques en Méditerranée ». Thesis, Université de Montpellier (2022-….), 2022. http://www.theses.fr/2022UMONG001.

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Parmi les polluants présents dans la troposphère, l’ozone (O3) est probablement l’un des plus stressant pour les organismes, du fait de son fort potentiel oxydant. Par exemple, de fortes concentrations d’O3 ([O3]) peuvent affecter l’émission des composés organiques volatils (COVs) permettant aux plantes de communiquer avec leur environnement. De plus, l’O3 peut réagir avec ces COVs dans l’atmosphère pour créer de nouvelles molécules, modifiant ainsi le signal chimique émis par les plantes. Or, ce signal est déterminant dans les interactions plantes-insectes. De nombreuses études ont montré les effets de l’O3 sur les parties végétatives des plantes mais très peu se sont intéressées aux parties reproductives, généralement responsables de l’attraction des pollinisateurs. L’objectif de cette thèse est donc d’améliorer nos connaissances sur l’effet de l’O3 dans les étapes de la communication chimique plantes-pollinisateurs, à savoir (i) l’émission par la plante des COVs floraux, (ii) le signal chimique lors de son transport dans l’atmosphère et (iii) la reconnaissance de ce signal par les pollinisateurs.En Méditerranée, les interactions entre le figuier méditerranéen, Ficus carica (Moraceae), et son pollinisateur très spécifique, Blastophaga psenes (Agaonidae), et entre la lavande vraie, Lavandula angustifolia (Lamiaceae) et son pollinisateur très généraliste l’abeille domestique, Apis mellifera (Apidae), sont les deux modèles d’études emblématiques choisis pour répondre aux objectifs de cette thèse, de par leur degré de spécificité, et la fréquence et l’intensité des pics de pollution à l’O3 dans cette région.Ces travaux de thèse ont combiné des études descriptives et expérimentales afin de déterminer (i) le rythme journalier d’émission des COVs chez la lavande et le figuier, (ii) les variations in natura d’émission des COVs floraux de figuiers exposés de façon chronique ou ponctuelle à une pollution à l’O3 et à d’autres facteurs du changement climatique, (iii) la réponse des deux espèces exposées, en conditions contrôlées, à un pic de pollution à l’O3 en terme d’émission de leurs COVs floraux, (iv) la réaction de l’O3 avec les COVs floraux dans une atmosphère contrôlée et (v) les conséquences de ces deux effets sur l’attraction de leurs pollinisateurs.Les résultats mettent en évidence (i) pour les deux modèles, un rythme d’émission de COVs a priori corrélé à l’intensité lumineuse mais avec différents pics d’émission dans la journée selon les COVs ; (ii) pour le figuier, une variation saisonnière très marquée de l’émission des COVs floraux in natura, en lien avec la température, la sécheresse et les pollutions chroniques et ponctuelles à l’O3 ; (iii) qu’une exposition en conditions contrôlées des deux espèces pendant 5 h à 200 ppb d’O3 ([O3] maximale répertoriée dans les 15 dernières années en méditerranée) n’a pas d’effets immédiats sur l’émission de leurs COVs floraux, mais que (iv) ces COVs seuls exposés à différentes [O3] réagissent différentiellement avec l’O3 pour former de nouvelles molécules, ceci faisant varier les proportions de COVs dans le mélange dès 40 ppb d’O3, et enfin, (v) chez le figuier, que ces variations de COVs inhibent l’attraction du pollinisateur. Cette étude a mis en évidence des sources de variations dans l’émission des COVs floraux chez les deux espèces modèles mais a également permis d’avoir une vision intégrative de l’effet d’un pic de pollution à l’O3 sur la concentration des COVs autour de ces plantes. Plus généralement, ces travaux de thèse soulignent l’importance d’étudier les facteurs du changement climatique co-occurant in natura, notamment les effets de la concentration de différents polluants atmosphériques, sur la communication chimique dans différentes interactions plantes-pollinisateurs afin de mettre en place des mesures de protection de ces interactions face aux changements environnementaux actuels et futurs
Among the pollutants present in the troposphere, ozone (O3) is probably one of the most stressful for organisms, owing to its strong oxidizing potential. For example, high concentrations of O3 ([O3]) can affect the emission of volatile organic compounds (VOCs) that allow plants to communicate with their environment. Moreover, O3 can react with these VOCs in the atmosphere to create new molecules, thus degrading the chemical signals upon which plant-insect interactions, including plant-pollinator interactions, depend. Many studies have shown the effects of O3 on the vegetative parts of plants but very few have studied their effects on their reproductive parts, which are generally responsible for the attraction of pollinators. This work therefore aims to provide knowledge on the effect of O3 in plant-pollinator chemical communication, namely, its effects on (i) the emission of floral VOCs by the plant, (ii) the chemical signal during its transport in the atmosphere and (iii) the recognition of this signal by pollinators.In the Mediterranean region, the interactions between the Mediterranean fig tree, Ficus carica (Moraceae), and its specific pollinator, Blastophaga psenes (Agaonidae), and between the true lavender, Lavandula angustifolia (Lamiaceae), and its generalist pollinator, the honeybee, Apis mellifera (Apidae), are the two emblematic study models chosen to meet the objectives of this dissertation, owing to their specificity and to the frequency and intensity of O3 pollution peaks in this region.This work combined descriptive and experimental studies to determine (i) the daily rate of VOCs emission from flowering plants, (ii) the in natura variation in emission of floral VOCs from fig trees exposed chronically or punctually to O3 pollution and other variables affected by climate change, (iii) the response of plants exposed under controlled conditions to a peak of O3 pollution, in terms of their emission of floral VOCs, (iv) the reaction of O3 with floral VOCs in a controlled atmosphere, and (v) the consequences of these two effects on the attraction of pollinators.The results show that (i) for both models, VOCs emission is correlated with light intensity but also shows different emission peaks during the day, depending on identity of the VOCs; (ii) for F. carica, there is marked seasonal variation in the emission of VOCs in natura, with light intensity, temperature, drought and chronic and acute source of O3 pollution responsible for variations in the emission of floral VOCs; (iii) for both species, exposure under controlled conditions for 5h to 200 ppb O3 (maximum ([O3] recorded in the last 15 years in the Mediterranean region) has no immediate effect on emission of floral VOCs, but (iv) floral VOCs alone exposed to different [O3] react differentially with the pollutant to form new molecules, thus modifying the proportions of VOCs in the mixture at [O3] as low as 40 ppb, and finally, (v) in F. carica, these modifications of VOCs significantly inhibit the attraction of the specific pollinator. This study highlights sources of variation in floral VOC emission in the two model species but also provides an integrative view of the effect of acute exposure to high [O3] on the concentration of VOCs around these plants. Behavioral tests with different pollinators are now essential to characterize the resilience of these interactions to the [O3]-induced variations in VOCs highlighted in this study. More generally, this work points to the importance of studying factors of climate change co-occurring in natura, including the effects of the concentrations of different air pollutants, on chemical communication in different plant-pollinator interactions in order to define measures to protect these interactions in the face of current and future environmental changes

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Claeson, Anna-Sara. « Volatile organic compounds from microorganisms : identification and health effects ». Doctoral thesis, Umeå : Univ, 2006. http://urn.kb.se/resolve?urn=urn:nbn:se:umu:diva-880.

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Livres sur le sujet "VOCs pollution"

U.S. Dept. of Energy. VOCs in arid soils : Technology summary. Washington, D.C : U.S. Dept. of Energy, 1994.

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Cheng shi da qi hui fa xing you ji hua he wu ( VOCs ) ce liang ji shu : CHENGSHI DAQI HUIFAXING YOUJI HUAHEWU ( VOCs ) CELIANG JISHU. Beijing : Zhongguo huan jing ke xue chu ban she, 2012.

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Cooper, C. David. Destruction of VOCs by a catalytic paint drying (IR) device. Research Triangle Park, NC : U.S. Environmental Protection Agency, Air and Energy Engineering Research Laboratory, 1985.

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Wayne, Draper, Federal/Provincial LRTAP Steering Committee (Canada) et Canadian Council of Ministers of the Environment., dir. Management plan for nitrogen oxides (NOx) and volatile organic compounds (VOCs) : Phase I. [Ottawa] : Canadian Council of Ministers of the Environment, 1990.

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Swift, T. Kevin. Volatile organic compounds (VOCs) control technology : Markets and applications. Norwalk, CT, USA : Business Communications Co., 1994.

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L, Dempsey Jeannette, Randall Craig D et United States. Environmental Protection Agency. Office of Air Quality Planning and Standards, dir. Economic impact and regulatory flexibility analysis of the regulation of VOCs from consumer products : Final report. Research Triangle Park, NC : U.S. Environmental Protection Agency, Office of Air Quality Planning and Standards, 1996.

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L, Bromberg Kevin, Robinson Jennifer et Roof Coatings Manufacturers Association, dir. RCMA VOC/VOS compliance guide. [S.l.] : The Association, 1993.

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Ressl, R. A. Field experience with four portable VOC monitors. Research Triangle Park, NC : U.S. Environmental Protection Agency, Environmental Monitoring Systems Laboratory, 1985.

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Directorate, Canada Environmental Health. Indoor air quality and you = : La qualité de l'air à l'intérieur et vous. Ottawa, Ont : Health and Welfare Canada = Santé et bien-être social Canada, 1989.

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Chapitres de livres sur le sujet "VOCs pollution"

Ciccioli, P. « VOCs and air pollution ». Dans Chemistry and Analysis of Volatile Organic Compounds in the Environment, 92–174. Dordrecht : Springer Netherlands, 1993. http://dx.doi.org/10.1007/978-94-011-2152-1_3.

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Kotzias, D., et C. Spartà. « VOCs and water pollution ». Dans Chemistry and Analysis of Volatile Organic Compounds in the Environment, 175–201. Dordrecht : Springer Netherlands, 1993. http://dx.doi.org/10.1007/978-94-011-2152-1_4.

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Kliest, J. J. G. « VOCs and soil pollution ». Dans Chemistry and Analysis of Volatile Organic Compounds in the Environment, 202–36. Dordrecht : Springer Netherlands, 1993. http://dx.doi.org/10.1007/978-94-011-2152-1_5.

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Chiang, Pen-Chi, et Xiang Gao. « Volatile Organic Compounds (VOCs) Control ». Dans Air Pollution Control and Design, 91–142. Singapore : Springer Nature Singapore, 2022. http://dx.doi.org/10.1007/978-981-13-7488-3_4.

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Zhang, Feng-Ju, Wen-Jing Han, Fang-Fang Cao, Xi-Hua You et Yang Xu. « Pollution Characteristics of VOCs in Atmospheric Background Air of Jinan Cities ». Dans Environmental Science and Technology : Sustainable Development, 211–20. Cham : Springer International Publishing, 2023. http://dx.doi.org/10.1007/978-3-031-27431-2_16.

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Zhuang, Zhipeng, Xingui Yi et Mingxin Xu. « Study on the Factors Affecting the Adsorption/Desorption Performance of Activated Carbon in the Application of Industrial VOCs Treatment Technology ». Dans Environmental Pollution Governance and Ecological Remediation Technology, 583–91. Cham : Springer International Publishing, 2023. http://dx.doi.org/10.1007/978-3-031-25284-6_63.

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Kitada, Toshihiro, Yasuhiro Kurodai, Takaaki Shimohara, Takao Kanzaki, Masaaki Yoshikawa et Takayuki Tokairin. « Numerical Study on Reduction of Ambient NOx, PM, and VOCs Concentrations by ACF (Activated Carbon Fiber) Fences : Effects of Generated Air Flow and Chemical Reactivity of the ACF Fences ». Dans Air Pollution Modeling and its Application XXII, 159–65. Dordrecht : Springer Netherlands, 2013. http://dx.doi.org/10.1007/978-94-007-5577-2_27.

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Nieuwland, Jan-Carel, et Michael S. McGrath. « Treatment of High VOC Levels in a Closed Biofilter ». Dans Environmental Pollution, 261–67. Dordrecht : Springer Netherlands, 2001. http://dx.doi.org/10.1007/978-94-017-0930-9_11.

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Lewis, Charles W. « Receptor Methods for VOC Source Apportionment in Urban Environments ». Dans Urban Air Pollution, 225–34. Berlin, Heidelberg : Springer Berlin Heidelberg, 1996. http://dx.doi.org/10.1007/978-3-642-61120-9_18.

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Aksoyoglu, S., G. Ciarelli, I. El-Haddad, U. Baltensperger et A. S. H. Prévôt. « Source Apportionment of Inorganic Aerosols in Europe and Role of Biogenic VOC Emissions ». Dans Air Pollution Modeling and its Application XXV, 375–79. Cham : Springer International Publishing, 2017. http://dx.doi.org/10.1007/978-3-319-57645-9_59.

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Actes de conférences sur le sujet "VOCs pollution"

JAVIERRE, ISABELLE, MATTHIEU HORGNIES, FLORENCE SERRE et ISABELLE DUBOIS-BRUGGER. « NO2 AND VOCS DEPOLLUTION IN GARAGE PROTOTYPES USING INNOVATIVE CONCRETES AND MORTARS ». Dans AIR POLLUTION 2017. Southampton UK : WIT Press, 2017. http://dx.doi.org/10.2495/air170221.

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Vilcekova, S. « Occurrence of VOCs before and after renovation of an apartment : a case study ». Dans AIR POLLUTION 2015, sous la direction de L. Meciarova. Southampton, UK : WIT Press, 2015. http://dx.doi.org/10.2495/air150301.

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Saraga, D., Th Maggos, Ch Vassilakos, J. Michopoulos, C. G. Helmis et J. G. Bartzis. « Contribution from smoking to PM2.5, PM1 particles and VOCs concentrations in residential houses in Athens, Greece ». Dans AIR POLLUTION 2006. Southampton, UK : WIT Press, 2006. http://dx.doi.org/10.2495/air06035.

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Kondo, A., A. Kaga, Y. Shimoda, Y. Inoue, D. Narumi, H. Bao, T. Machimura, M. Tada et K. Sakaguchi. « Change of photochemical oxidant concentration by increase of VOCs emission from vegetations due to global warming ». Dans AIR POLLUTION 2006. Southampton, UK : WIT Press, 2006. http://dx.doi.org/10.2495/air06045.

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Bartzis, J. G., S. Michaelidou, D. Missia, E. Tolis, D. Saraga, E. Demetriou-Georgiou, D. Kotzias et J. M. Barero-Moreno. « Indoor concentrations of VOCs and ozone in two cities of Northern Europe during the summer period ». Dans AIR POLLUTION 2008. Southampton, UK : WIT Press, 2008. http://dx.doi.org/10.2495/air080461.

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Li, Y. Q., J. Li, R. R. Wu et S. D. Xie. « Characterization and source identification of ambient volatile organic compounds (VOCs) in a heavy pollution episode in Beijing, China ». Dans AIR POLLUTION 2016. Southampton UK : WIT Press, 2016. http://dx.doi.org/10.2495/air160231.

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Beyene, Asfaw. « Sizing Incineration for Base-Load Energy ». Dans ASME Turbo Expo 2003, collocated with the 2003 International Joint Power Generation Conference. ASMEDC, 2003. http://dx.doi.org/10.1115/gt2003-38925.

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Many state and country codes require that Volatile Organic Compounds (VOC) are either captured or destroyed before they are emitted to the atmosphere. This measure requires designing and operating refrigeration systems that would evaporate, condense and separate the VOC from air stream, or more commonly, install afterburners to combust the VOCs. Both condensation and combustion related abatement technologies involve large capital and maintenance costs. In the case of combusting the VOC, fuel is usually added to the air/VOC mixture for proper air/fuel ratio and effective combustion. The resulting high temperature gas free from VOC is often emitted to the ambient with little or no value captured from the energy intensive process. Regulations limiting the emission of VOCs continue to grow. Paint and coating lines and manufacturing processes that involve emission of chemical vapors such as carpet manufacturing, produce large amounts of VOC that needs to be oxidized. Other incinerators that do not necessarily involve VOCs, such as kiln systems also produce large energy waste. Thermodynamically, the VOC destruction combustion process is simply a total waste of energy unless it allows some waste recovery. Afterburners are typically designed for environmental reasons, ignoring the energy cost, which is accepted as an inevitable penalty. This paper discusses the feasibility of selecting incinerators as a Gas Turbine Oxidizer (GTO) sized for the base-energy load. So sized GTO could produce process heat, generate electric power, shave energy peaks, and reduce air pollution without compromising the primary intent of effectively destroying VOCs.

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PETRAUSKAITĖ, Erika, et Rasa VAIŠKŪNAITĖ. « EXPERIMENTAL STUDY OF DROPLET BIOFILTER PACKED WITH GREEN SPHAGNUM TO CLEAN AIR FROM VOLATILE ORGANIC COMPOUNDS ». Dans Conference for Junior Researchers „Science – Future of Lithuania“. VGTU Technika, 2017. http://dx.doi.org/10.3846/aainz.2017.015.

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Volatile organic compound pollution is one of the problems of outdoor and indoor environment air quality. In order to maintain good air quality, air cleaning technologies are being engaged. One of the recent biological air treatment technology is biofiltration. It is a promising treatment of air from volatile organic compounds (VOCs). Experimental research of droplet biofilter for cleaning VOCs was carried out. Biofilter load of green sphagnum was used with the aim to clean three different concentrations of pollutant toluene. Measurements of biofiltration processes were recorded after 20 and 40 days. The aim of this experimental research is to estimate biofilter efficiency using green sphagnum as a load material.

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Yuan, Lei, et NanYang Yu. « Notice of Retraction : The Indoor Volatile Organic Compounds (VOCs) Pollution Control Methods - A Case Study ». Dans 2010 4th International Conference on Bioinformatics and Biomedical Engineering (iCBBE 2010). IEEE, 2010. http://dx.doi.org/10.1109/icbbe.2010.5516653.

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Li, Shuo, AiLing Ren, Bin Guo, Zhao Du, Shuo Zhang, Miao Tian et Shanshan Wang. « Influence of Meteorological Factors and VOCs on PM2.5during Severe Air Pollution Period in Shijiazhuang in Winter ». Dans 2015 2nd International Conference on Machinery, Materials Engineering, Chemical Engineering and Biotechnology. Paris, France : Atlantis Press, 2016. http://dx.doi.org/10.2991/mmeceb-15.2016.116.

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Rapports d'organisations sur le sujet "VOCs pollution"

Snider, Thomas J. An Analysis of Air Pollution Control Technologies for Shipyard Emitted Volatile Organic Compounds (VOCS). Fort Belvoir, VA : Defense Technical Information Center, mars 1993. http://dx.doi.org/10.21236/ada458147.

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