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1

Carmen, Florean, Henriette Szilagyi, and Andreea Hegyi. "Environment and Pollution Management of Pollution Volatile Organic Compounds in Cluj-Napoca." Present Environment and Sustainable Development 10, no. 2 (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
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Cui, Lulu, Di Wu, Shuxiao Wang, Qingcheng Xu, Ruolan Hu, and 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, no. 18 (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
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3

Zhang, Dan, Xiaoqing Huang, Shaoxuan Xiao, Zhou Zhang, Yanli Zhang, and Xinming Wang. "Characterization and Sources of VOCs during PM2.5 Pollution Periods in a Typical City of the Yangtze River Delta." Atmosphere 15, no. 10 (2024): 1162. http://dx.doi.org/10.3390/atmos15101162.

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To investigate the characteristics and sources of volatile organic compounds (VOCs) as well as their impacts on secondary organic aerosols (SOAs) formation during high-incidence periods of PM2.5 pollution, a field measurement was conducted in December 2019 in Hefei, a typical city of the Yangtze River Delta (YRD). During the whole process, the mixing ratios of VOCs were averaged as 21.1 ± 15.9 ppb, with alkanes, alkenes, alkyne, and aromatics accounting for 59.9%, 15.3%, 15.0%, and 9.8% of the total VOCs, respectively. It is worth noting that the contributions of alkenes and alkyne increased s
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Wang, Qi, Chēn Wang, Lujian Hou, Bo Lv, and 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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Liu, Hefan, Ning Wang, Dongyang Chen, Qinwen Tan, Danlin Song, and Fengxia Huang. "How Photochemically Consumed Volatile Organic Compounds Affect Ozone Formation: A Case Study in Chengdu, China." Atmosphere 13, no. 10 (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 maximu
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6

Ma, Wei, Zemin Feng, Junlei Zhan, et al. "Influence of photochemical loss of volatile organic compounds on understanding ozone formation mechanism." Atmospheric Chemistry and Physics 22, no. 7 (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 whe
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7

Xue, Yonggang, Yu Huang, Steven Sai Hang Ho, et al. "Origin and transformation of ambient volatile organic compounds during a dust-to-haze episode in northwest China." Atmospheric Chemistry and Physics 20, no. 9 (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 vehic
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Hua, Xiaohui, Meng Wang, Zhen Yao, Run Hao, and Hailin Wang. "Characteristics and Sensitivity Analysis of Ozone Pollution in a Typical Inland City in China." Atmosphere 15, no. 2 (2024): 160. http://dx.doi.org/10.3390/atmos15020160.

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In this research, long-term monitoring data from 2020 to 2023 were used to characterize O3 pollution in a typical inland city in northwest China (34°21′ N 109°30′ E), which indicated that ozone pollution yielded typical regular fluctuations and high ozone concentrations from April to September were observed. Ozone varied in the range of 16–176 μg/m3, and maximum peaks were found usually at 14:00–17:00 in June and July. Correlation analysis showed a significant positive relationship between ozone and temperature, with correlation coefficients of 0.93. The wind speed exhibits a similar variation
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9

Cordell, Rebecca L., Rikesh Panchal, Emmanuel Bernard, et al. "Volatile Organic Compound Composition of Urban Air in Nairobi, Kenya and Lagos, Nigeria." Atmosphere 12, no. 10 (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 V
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10

Alvarez-Vaca, Daniel, Radu Corneliu Duca, Alicia Borras-Santos, et al. "Surveillance of Indoor Air Concentration of Volatile Organic Compounds in Luxembourgish Households." International Journal of Environmental Research and Public Health 19, no. 9 (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. Ob
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Du, Zhao, Xiang Ling Yuan, Ai Ling Ren, and Feng Ying Fu. "Typical Pharmaceutical Process VOCs and Stench Pollution Characteristics and Control Techniques." Advanced Materials Research 726-731 (August 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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12

Vanderplanck, Maryse, Benoît Lapeyre, Margot Brondani, et al. "Ozone Pollution Alters Olfaction and Behavior of Pollinators." Antioxidants 10, no. 5 (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 un
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Tan, Rui, Song Guo, Sihua Lu, et al. "Characteristics and Secondary Organic Aerosol Formation of Volatile Organic Compounds from Vehicle and Cooking Emissions." Atmosphere 14, no. 5 (2023): 806. http://dx.doi.org/10.3390/atmos14050806.

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In the present work, volatile organic compounds (VOCs) from vehicle exhaust and cooking fumes were investigated via simulation experiments, which covered engine emissions produced during gasoline direct injection (GDI) using two kinds of fuels and cooking emissions produced by preparing three domestic dishes. The distinct characteristics of VOCs emitted during the two processes were identified. Alkanes (73% mass fraction on average) and aromatics (15% on average) dominated the vehicle VOCs, while oxygenated VOCs (49%) and alkanes (29%) dominated the cooking VOCs. Isopentane (22%) was the most
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14

Xie, Shuyang, Yuanjun Gong, Yunbo Chen, Kai Li, and Junfeng Liu. "Characterization and Source Analysis of Pollution Caused by Atmospheric Volatile Organic Compounds in the Spring, Kunming, China." Atmosphere 14, no. 12 (2023): 1767. http://dx.doi.org/10.3390/atmos14121767.

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The surface atmospheric O3 concentration in Kunming shows a significant upward trend, with high values mainly occurring in March–May. Volatile organic compounds (VOCs) are one of the most important precursors of O3. However, the sources of VOCs are complex and difficult to identify. In order to understand the pollution levels, the spatial distribution characteristics, and possible sources of VOCs, we conducted simultaneous offline sampling at representative sites in six different functional areas of Kunming using SUMMA canisters for one week. The VOC samples were analyzed via GC/MS. The VOC da
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15

Han, Meng, Jing Geng, Gen Wang, et al. "Source Apportionment of VOCs in Urban Tianjin, China." Advanced Materials Research 955-959 (June 2014): 1326–29. http://dx.doi.org/10.4028/www.scientific.net/amr.955-959.1326.

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facing the problem of VOCs pollution, VOCs concentrations in urban Tianjin have been measured to identify their possible sources. Using positive matrix factorization, seven VOC sources are identified in urban Tianjin according to the factor loadings of various VOCs, including: 1) motor vehicle exhaust; 2) gasoline evaporation; 3) internal engine combustion emission; 4) diesel emission; 5) solvent usage; 6) industrial emission; and 7) biogenic emission. The identified sources of VOCs are significantly related to vehicular activities, which specifically contribute 60% to VOCs loadings in urban T
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16

Shellaiah, Muthaiah, and Kien Wen Sun. "Inorganic-Diverse Nanostructured Materials for Volatile Organic Compound Sensing." Sensors 21, no. 2 (2021): 633. http://dx.doi.org/10.3390/s21020633.

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Environmental pollution related to volatile organic compounds (VOCs) has become a global issue which attracts intensive work towards their controlling and monitoring. To this direction various regulations and research towards VOCs detection have been laid down and conducted by many countries. Distinct devices are proposed to monitor the VOCs pollution. Among them, chemiresistor devices comprised of inorganic-semiconducting materials with diverse nanostructures are most attractive because they are cost-effective and eco-friendly. These diverse nanostructured materials-based devices are usually
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17

Yu, Hui, Qianqian Liu, Nana Wei, et al. "Investigation of Summertime Ozone Formation and Sources of Volatile Organic Compounds in the Suburb Area of Hefei: A Case Study of 2020." Atmosphere 14, no. 4 (2023): 740. http://dx.doi.org/10.3390/atmos14040740.

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Ground surface ozone (O3) is an emerging concern in China due to its complex formation process. In August 2020, field measurements of O3, NOx, and volatile organic compounds (VOCs) were carried out in Hefei’s western suburbs. The pollution features of VOCs and O3 formation were thoroughly analyzed. The total VOC concentration was 42.26 ppb, with the dominant contributor being oxygenated VOCs (OVOCs). Seven emission sources were recognized using the positive matrix factorization (PMF) model, including aged air masses, combustion sources, fuel evaporation, industrial emissions, vehicular emissio
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18

Yao, Shiyin, Wei Wei, Shuiyuan Cheng, Yuan Niu, and Panbo Guan. "Impacts of Meteorology and Emissions on O3 Pollution during 2013–2018 and Corresponding Control Strategy for a Typical Industrial City of China." Atmosphere 12, no. 5 (2021): 619. http://dx.doi.org/10.3390/atmos12050619.

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The air quality of Handan, a typical industrial city in China, has been significantly improved through atmospheric pollution control, except for ozone (O3) pollution. We found that, in summer, emissions of anthropogenic volatile organic compounds (VOCs) and NOx decreased yearly in Handan, but the O3 concentration significantly declined yearly during 2013–2015, whereas it experienced worsening O3 pollution after 2015. Therefore, we used the Weather Research and Forecasting Community Multiscale Air Quality (WRF–CMAQ) modeling system to simulate the influence of the meteorological conditions and
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Sakunkoo, Pornpun, Saksit Phonphinyo, Naowarat Maneenin, et al. "Comparison of Volatile Organic Compound Concentrations in Ambient Air among Different Source Areas around Khon Kaen, Thailand." Atmosphere 12, no. 12 (2021): 1694. http://dx.doi.org/10.3390/atmos12121694.

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Volatile organic compounds (VOCs) are a complex group of chemicals that pose a direct risk to human health. They also lead to the formation of other air pollution constituents, including fine particulate matter (PM2.5) and ground level ozone (O₃). The ambient air concentrations of 19 VOCs were measured using multi-day 24 h sampling at two urban sites and two rural sites in the area of Khon Kaen, Thailand. Results showed that most VOCs were at concentrations considered acceptable according to the 24 h average standards established by the Thai Pollution Control Department. The VOC acrolein, howe
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Yu, Jian Feng, Qing Cui, Yun Hui Du, Fan Chen, and Cun Wei Zhan. "Strategies to Control VOCs Emissions from the Petroleum Storage and Transportation Project in Chinese Ports." Advanced Materials Research 955-959 (June 2014): 1747–49. http://dx.doi.org/10.4028/www.scientific.net/amr.955-959.1747.

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This paper summarized the characteristics and status of VOCs pollution of the harbour petroleum storage project, learnt from the regulation policy and prevention technique of developed countries for controlling VOCs emission from the harbours oil product storage and transportation system, and then put forward suggestions for preventing and controlling VOCs from the oil product storage and transportation projects in Chinese port by considering the requirements of "MARPOL73/78".
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Zhang, Chenyue, Shuzhen Luo, Wenting Zhao, et al. "Impacts of Meteorological Factors, VOCs Emissions and Inter-Regional Transport on Summer Ozone Pollution in Yuncheng." Atmosphere 12, no. 12 (2021): 1661. http://dx.doi.org/10.3390/atmos12121661.

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Summer ozone (O3) pollution in China has become increasingly serious in recent years. This study is based on hourly data of near-surface ozone (O3) and nitrogen oxides (NOx) and volatile organic compounds (VOCs) from June to August 2020 in Yuncheng, combined with meteorological data to analyse the characteristics of O3 pollution in summer and the influence of meteorological factors, precursors, and long-range transport on O3 pollution. In this paper, the VOCs/NOx characteristic ratio method was used to explore the sensitivity of O3 generation. Backward trajectories, cluster analysis, potential
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Gao, Xin, Yanan Wang, Lin Wu, et al. "The Impact of Anthropogenic VOC Emissions on Atmospheric Pollution: A Case Study of a Typical Industrialized Area in China." Atmosphere 14, no. 10 (2023): 1586. http://dx.doi.org/10.3390/atmos14101586.

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Volatile organic compounds (VOCs) are the main precursors of pollution from ground ozone (O3) and PM2.5, which cause the deterioration of urban air quality. The emissions of VOCs from industrialized areas are significant and their characteristics are complex, which nowadays contribute significantly to the challenges of investigating the emission inventory. Taking a typical industrialized area in Tianjin as a case study, the anthropogenic VOCs emission inventory for 2020 was established in this study by using the activity data from a large-scale survey and the latest emission factors. The impac
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Qiu, Yuqing, Xin Li, Wenxuan Chai, et al. "Insights into ozone pollution control in urban areas by decoupling meteorological factors based on machine learning." Atmospheric Chemistry and Physics 25, no. 3 (2025): 1749–63. https://doi.org/10.5194/acp-25-1749-2025.

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Abstract. Ozone (O3) pollution is posing significant challenges to urban air quality improvement in China. The formation of surface O3 is intricately linked to chemical reactions which are influenced by both meteorological conditions and local emissions of precursors (i.e., NOx and volatile organic compounds, VOCs). When meteorological conditions deteriorate, the atmosphere's capacity to cleanse pollutants decreases, leading to the accumulation of air pollutants. Although a series of emission reduction measures have been implemented in urban areas, the effectiveness of O3 pollution control pro
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Kong, Lan, Tianzhi Luo, Xia Jiang, et al. "Seasonal Variation Characteristics of VOCs and Their Influences on Secondary Pollutants in Yibin, Southwest China." Atmosphere 13, no. 9 (2022): 1389. http://dx.doi.org/10.3390/atmos13091389.

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Volatile organic compounds (VOCs) have a crucial impact on the formation of ozone and secondary organic aerosols in the near-surface atmosphere. Understanding the composition characteristics and sources of VOCs is necessary for determining effective control policies to mitigate VOCs and related secondary pollutions. We performed on-line measurements of VOC species in typical months of each season in Yibin, a fast-growing city in Sichuan Basin in China, to identify VOC seasonal characteristics, sources, and the potential for secondary pollution formation. The average mixing ratio of VOCs in Yib
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Yang, Xi, Xuwei Deng, Guangxin Li, Yu Liu, and Qiang Gao. "Human Activities Aggravate VOC Pollution in the Huangshui River of the Tibetan Plateau." Sustainability 14, no. 19 (2022): 11983. http://dx.doi.org/10.3390/su141911983.

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Many xenobiotic compounds can threaten human health and natural ecosystems. The ability to predict the level of human activities and identify major impact factors is crucial for the design of pollutant risk-reduction plans. In this study, a total of 25 volatile organic compounds (VOCs) including eight alkenes, six alkanes, and eleven aromatics were identified at 11 monitoring locations along the Huangshui River of the Tibetan Plateau. GC-MS analysis was applied to detect the concentrations of the VOCs. The results showed that the alkene, alkane, and aromatic concentrations in the sediment were
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Kang, Ningxin, Weichuang Zhou, Zheng Qi, et al. "Recent Progress of Natural Mineral Materials in Environmental Remediation." Catalysts 12, no. 9 (2022): 996. http://dx.doi.org/10.3390/catal12090996.

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Organic contaminants, volatile organic compounds (VOCs), and heavy metals have posed long-term threats to the ecosystem and human health. Natural minerals have aroused widespread interest in the field of environmental remediation due to their unique characteristics such as rich resources, environmentally benign, and excellent photoelectric properties. This review briefly introduced the contributions of natural minerals such as sulfide minerals, oxide minerals, and oxysalt minerals in pollution control, which include organic pollution degradation, sterilization, air purification (NO VOCs oxidat
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Li, Bowei, Steven Sai Hang Ho, Sunling Gong, et al. "Characterization of VOCs and their related atmospheric processes in a central Chinese city during severe ozone pollution periods." Atmospheric Chemistry and Physics 19, no. 1 (2019): 617–38. http://dx.doi.org/10.5194/acp-19-617-2019.

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Abstract. A 5-month campaign (from May to September 2017) was conducted to characterize volatile organic compounds (VOCs) for the first time at four sites in Zhengzhou, Henan Province, China, where ground level ozone (O3) concentration has shown an increasing trend in recent years. Canister samples were collected for the measurement of 57 VOCs, which, along with reactive nitrogen oxides (NOx), are the most important O3 precursors. During the same period, O3 and its precursor gases were monitored online simultaneously. The results indicated that the average mixing ratio of total quantified VOCs
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Cao, Li, Qihui Men, Zihao Zhang, et al. "Significance of Volatile Organic Compounds to Secondary Pollution Formation and Health Risks Observed during a Summer Campaign in an Industrial Urban Area." Toxics 12, no. 1 (2024): 34. http://dx.doi.org/10.3390/toxics12010034.

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The chemical complexity and toxicity of volatile organic compounds (VOCs) are primarily encountered through intensive anthropogenic emissions in suburban areas. Here, pollution characteristics, impacts on secondary pollution formation, and health risks were investigated through continuous in-field measurements from 1–30 June 2020 in suburban Nanjing, adjacent to national petrochemical industrial parks in China. On average, the total VOCs concentration was 34.47 ± 16.08 ppb, which was comprised mostly by alkanes (41.8%) and halogenated hydrocarbons (29.4%). In contrast, aromatics (17.4%) domina
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Ge, Aoqi, Zhenfeng Wu, Shaoxuan Xiao, et al. "Carbonyl Compounds Observed at a Suburban Site during an Unusual Wintertime Ozone Pollution Event in Guangzhou." Atmosphere 15, no. 10 (2024): 1235. http://dx.doi.org/10.3390/atmos15101235.

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Carbonyl compounds are important oxygenated volatile organic compounds (VOCs) that play significant roles in the formation of ozone (O3) and atmospheric chemistry. This study presents comprehensive field observations of carbonyl compounds during an unusual wintertime ozone pollution event at a suburban site in Guangzhou, South China, from 19 to 28 December 2020. The aim was to investigate the characteristics and sources of carbonyls, as well as their contributions to O3 formation. Formaldehyde, acetone, and acetaldehyde were the most abundant carbonyls detected, with average concentrations of
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Shi, Jianwu, Yuzhai Bao, Feng Xiang, et al. "Pollution Characteristics and Health Risk Assessment of VOCs in Jinghong." Atmosphere 13, no. 4 (2022): 613. http://dx.doi.org/10.3390/atmos13040613.

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In order to investigate the seasonal variation in chemical characteristics of VOCs in the urban and suburban areas of southwest China, we used SUMMA canister sampling in Jinghong city from October 2016 to June 2017. Forty-eight VOC species concentrations were analyzed using atmospheric preconcentration gas chromatography–mass spectrometry (GC–MS), Then, regional VOC pollution characteristics, ozone formation potentials (OFP), source identity, and health risk assessments were studied. The results showed that the average concentration of total mass was 144.34 μg·m−3 in the urban area and 47.81 μ
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Chen, Tianshu, Likun Xue, Penggang Zheng, et al. "Volatile organic compounds and ozone air pollution in an oil production region in northern China." Atmospheric Chemistry and Physics 20, no. 11 (2020): 7069–86. http://dx.doi.org/10.5194/acp-20-7069-2020.

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Abstract. Oil and natural gas (O&NG) exploration presents a significant source of atmospheric volatile organic compounds (VOCs), which are central players of tropospheric chemistry and contribute to formations of ozone (O3) and secondary organic aerosols. The impacts of O&NG extraction on regional air quality have been investigated in recent years in North America, but have long been overlooked in China. To assess the impacts of O&NG exploration on tropospheric O3 and regional air quality in China, intensive field observations were conducted during February–March and Ju
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Sui, Yifan, Xiaohu Sun, Jie Guan, et al. "Kill two birds with one stone: simultaneous removal of volatile organic compounds and ozone secondary pollution by a novel photocatalytic process." RSC Advances 14, no. 21 (2024): 14784–92. http://dx.doi.org/10.1039/d4ra00366g.

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Zhang, Yuxiu, Tingting Zang, Bo Yan, and Chaohai Wei. "Distribution Characteristics of Volatile Organic Compounds and Contribution to Ozone Formation in a Coking Wastewater Treatment Plant." International Journal of Environmental Research and Public Health 17, no. 2 (2020): 553. http://dx.doi.org/10.3390/ijerph17020553.

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Ozone pollution, which can be caused by photochemical reactions, has become a serious problem. The ozone formation potential (OFP) is used to describe the photochemical reactivity. Volatile organic compounds (VOCs) are main precursors of ozone formation, and wastewater treatment plants (WWTPs) are important sources of VOCs. Therefore, it is necessary to study the concentration level and OFP of VOCs from WWTPs. In this work, a coking WWTP with anaerobic-oxic-oxic (A/O/O) processes in Shaoguan city, Guangdong province, China, was selected to investigate the characteristics of VOCs at wastewater
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Wu, Shu Yun, Zeng Feng Yan, Jun Gang Dong, and Huan Huan Liu. "Research of the Distribution of Volatile Organic Compounds (VOC) in Print Shops in Xi’an." Applied Mechanics and Materials 209-211 (October 2012): 1560–65. http://dx.doi.org/10.4028/www.scientific.net/amm.209-211.1560.

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Volatile organic compounds (VOCs) are major constituents of the indoor air pollutants. The indoor air quality has caused wide concern for VOCs may affect human health in many ways. The VOCs in general rooms volatilize from building materials, furniture and so on. In print shops the print equipment and materials may produce a large amount of VOCs that may affect the health of the long-term print shop workers. The author has measured the VOC content and the air indexes in a seventy square-meter print shop in Xi’an with comprehensive functions, then, evaluated the pollution and proposed the preve
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Li, Yan, and Bo Yan. "Human health risk assessment and distribution of VOCs in a chemical site, Weinan, China." Open Chemistry 20, no. 1 (2022): 192–203. http://dx.doi.org/10.1515/chem-2022-0132.

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Abstract The study assessed the volatile organic compound (VOC) pollution characteristics in a chemical site in Weinan, China. The results indicated that chloroform, benzene, trichloroethylene, 1,2-dichloroethane, ethylbenzene, 1,2-dichloropropane, and 1,2,3-Trichloropropane exceeded the soil standard limit for soil contamination of development land (GB36600, PRC). Using pollution index, ambient severity, and correlation coefficient revealed industrial production and relocation activities as sources of VOCs contamination in the site. The carcinogenic risk assessed by human exposure to site VOC
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Yuan, Hua Wei, Hong Ling Yin, Yun Huang, et al. "Study on the Pollution Characteristic of VOCs in Ambient Air of Chengdu." Advanced Materials Research 610-613 (December 2012): 1889–94. http://dx.doi.org/10.4028/www.scientific.net/amr.610-613.1889.

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In this study, the environmental behavior of major VOCs in ambient air were investigated in urban and suburban areas in Chengdu city in the spring of 2012. VOCs samples were collected by sorbent tubes with TENAX TA, and were analyzed by thermal desorption followed by gas chromatography mass spectrometry. The most abundant VOCs were aromatic hydrocarbons (58.09%), next in order were alkanes(15.28%), esters(11.27%), aldehydes and ketones(7.64%), acids and heterocyclic compounds(3.39%), olefins(2.96%), alcohols(0.84%), amines(0.35%), ethers(0.17%). Alkanes, alkenes, aromatic hydrocarbons, esters
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Cho, Arthur K., Yasuhiro Shinkai, Debra A. Schmitz, et al. "Chemical and Biological Characterization of Particulate Matter (PM 2.5) and Volatile Organic Compounds Collected at Different Sites in the Los Angeles Basin." Applied Sciences 10, no. 9 (2020): 3245. http://dx.doi.org/10.3390/app10093245.

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Background: Most studies on air pollution (AP) exposure have focused on adverse health effects of particulate matter (PM). Less well-studied are the actions of volatile organic compounds (VOCs) not retained in PM collections. These studies quantified chemical and biological properties of both PM2.5 and VOCs. Methods: Samples were collected near the Port of Los Angeles (Long Beach, LB), railroads (Commerce, CM), and a pollution-trapping topography-site (San Bernardino, SB). Quantitative assays were conducted: (1) chemical—prooxidant and electrophile content, (2) biological—tumor necrosis factor
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38

Ibragimova, Olga P., Anara Omarova, Bauyrzhan Bukenov, Aray Zhakupbekova, and Nassiba Baimatova. "Seasonal and Spatial Variation of Volatile Organic Compounds in Ambient Air of Almaty City, Kazakhstan." Atmosphere 12, no. 12 (2021): 1592. http://dx.doi.org/10.3390/atmos12121592.

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Air pollution is one of the primary sources of risk to human health in the world. In this study, seasonal and spatial variations of multiple volatile organic compounds (VOCs) were measured at six sampling sites in Almaty, Kazakhstan. The seasonal and spatial variations of 19 VOCs were evaluated in 2020, including the periods before and after COVID-19 lockdown. The concentrations of 9 out of 19 VOCs had been changed significantly (p < 0.01) during 2020. The maximum concentrations of total VOCs (TVOCs) were observed on 15, 17, and 19 January and ranged from 233 to 420 µg m−3. The spatial dist
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Zhang, Ge, Yujia Wei, Fulu Sun, and Maierfeina Maihemuti. "Nano Water Ion Technology for VOCs Degradation: Insights into the Synergistic Mechanism of Hydrogen-Containing and Non-Hydrogen-Containing Reactive Oxygen Species." Processes 13, no. 7 (2025): 1959. https://doi.org/10.3390/pr13071959.

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Volatile Organic Compounds (VOCs) pollution poses significant threats to both environmental quality and human health, while conventional purification technologies such as photocatalysis and adsorption exhibit limitations, including low efficiency and high operational costs. This study implements Nano Water Ion Technology (NWIT) for efficient VOCs degradation under ambient conditions (20 °C). Through a customized reaction system, we systematically investigated the degradation performance and mechanistic pathways of NWIT toward representative VOCs (formaldehyde and toluene). Experimental analysi
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Zhuang, Zhipeng, Weijian Zhou, Zhihua Pang, Yutao Lei, and Wenzhong Liang. "Analysis on Comprehensive Treatment of VOCs in Key Industries of A City." E3S Web of Conferences 145 (2020): 02060. http://dx.doi.org/10.1051/e3sconf/202014502060.

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Vocs have become a weak base for air pollution control compared to particulate matter, sulfur dioxide and nitrogen oxide. Petrochemical, chemical, industrial coating, packaging and printing, oil storage and Marketing Industries (hereinafter referred to as key industries) are China’s key sources of VOCs emissions. In order to win the battle of protecting the blue sky and improve the air quality, it is urgent to strengthen the comprehensive treatment of VOCs in key industries. In order to fully understand the comprehensive treatment and emission control of industrial sources of organic waste gas
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Zhang, Bowen, Dong Zhang, Zhe Dong, Xinshuai Song, Ruiqin Zhang, and Xiao Li. "The variations in volatile organic compounds based on the policy change for Omicron in the traffic hub of Zhengzhou." Atmospheric Chemistry and Physics 24, no. 23 (2024): 13587–601. https://doi.org/10.5194/acp-24-13587-2024.

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Abstract. Online volatile organic compounds (VOCs) were monitored before and after the Omicron policy change at an urban site in polluted Zhengzhou from 1 December 2022 to 31 January 2023. The characteristics and sources of VOCs were investigated. The daily mean concentrations of PM2.5 and total VOCs (TVOCs) ranged from 53.5 to 239.4 µg m−3 and 15.6 to 57.1 ppbv, respectively, with mean values of 111.5 ± 45.1 µg m−3 and 36.1 ± 21.0 ppbv, respectively, throughout the period. Two severe pollution events (designated as case 1 and case 2) were identified in accordance with the National Ambient Air
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Wu, Edward Ming-Yang, and Shu-Lung Kuo. "Characteristics of Photochemical Reactions with VOCs Using Multivariate Statistical Techniques on Data from Photochemical Assessment Monitoring Stations." Atmosphere 13, no. 9 (2022): 1489. http://dx.doi.org/10.3390/atmos13091489.

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This study assesses the concentrations of the 54 ozone precursors (all being volatile organic compounds (VOCs)) detected at the four photochemical assessment monitoring stations that are part of the air quality monitoring network in the Kaohsiung-Pingtung area in Taiwan. Factor and cluster analyses of the multivariate statistical analysis are performed to explore the interrelationship among the 10 VOCs of relatively higher concentrations selected from the 54 ozone precursors to identify significant factors affecting ozone pollution levels in the study area. Moreover, the multivariate statistic
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Huang, Haibao, Ying Xu, Qiuyu Feng, and Dennis Y. C. Leung. "Low temperature catalytic oxidation of volatile organic compounds: a review." Catalysis Science & Technology 5, no. 5 (2015): 2649–69. http://dx.doi.org/10.1039/c4cy01733a.

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Yang, Xue, Luhong Gao, Shiyang Zhao, et al. "Volatile Organic Compounds in the North China Plain: Characteristics, Sources, and Effects on Ozone Formation." Atmosphere 14, no. 2 (2023): 318. http://dx.doi.org/10.3390/atmos14020318.

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Enhanced volatile organic compounds (VOCs) observations were made on ozone-exceeding days in June 2020 in Linyi, China. A total of 69 VOCs were collected (1 alkyne, 29 alkanes, 10 alkenes, 14 aromatic hydrocarbons, and 15 oxygenated volatile organic compounds (OVOCs)). The average concentration of total VOCs (TVOCs) was 36.0 ± 0.66 ppb, and the top three VOCs components were alkanes, OVOCs, and aromatic hydrocarbons, which accounted for 40.75%, 27.02%, and 11.30%, respectively. Based on the positive matrix factorization (PMF) model, the main sources of VOCs in Linyi City were divided into vehi
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Wang, Shifang, Lei Song, Haijie He, and Wenjie Zhang. "Volatile Organic Compounds (VOCs) in Soil: Transport Mechanisms, Monitoring, and Removal by Biochar-Modified Capping Layer." Coatings 14, no. 3 (2024): 270. http://dx.doi.org/10.3390/coatings14030270.

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Volatile organic compounds (VOCs), as a primary pollutant in industrial-contaminated sites or polluted soils, cause severe damage to the soil. Therefore, a comprehensive understanding of the transport of VOCs in soil is imperative to develop effective detection means and removal methods. Among them, biochar possesses potential advantages in the adsorption of VOCs, serving as an effective method for removing VOCs from soil. This review provides an overview of the VOCs within soil, their transport mechanisms, monitoring technology, and removal approach. Firstly, the historical development of the
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Zhang, Yu-ting, Li-xin JIAO, Yun-xuan CHENG, Yue ZHANG, Yu-hua YIN, and He HUANG. "Pollution Characteristics and Risk Assessment of Volatile Organic Compounds in Songhua Lake, China." International Journal of Scientific Research and Management 11, no. 03 (2023): 244–61. http://dx.doi.org/10.18535/ijsrm/v11i03.fe1.

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In order to assess the dangers to human health and the environment from Songhua Lake's volatile organic compounds (VOCs) pollution. A total of 18 VOCs were found in the water samples that were collected at 26 sampling locations in Songhua Lake utilizing the purge and trap technique and gas chromatography-mass spectrometry (GC-MS). Toluene and naphthalene had the highest detection rates among them, reaching 96.15%; trans-1,2-dichloroethylene, 1,2-dichloroethane, and isopropyl benzene had the lowest rates, only 3.85%. The maximum and average concentrations of 1,1-dichloroethane were 20.93 μg/L a
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Na Roi-et, Veerapas, and Supawat Chaikasem. "Potential of Passive Sampling and Plant Absorption to Quantify Inhalation Exposure to Volatile Organic Compounds." Environment and Natural Resources Journal 19, no. 1 (2020): 43–56. http://dx.doi.org/10.32526/ennrj/19/2020110.

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Emission of volatile organic compounds (VOCs) from photocopiers was investigated to assess the potential health impacts on inhalation exposure to VOCs. VOCs samples were collected during working hours using SKC VOCs 575 series passive sample. Twenty-one quantified VOCs were measured and analyzed by GC-MS/MS. The results showed that the total VOCs concentration emitted in the photocopy centers A and B were 2.29×104 and 2.32×104 µg/m3, respectively. The highest detected chemical was trans-1,2-Dichloroethene at about 2.18×104 (photocopy center A) and 2.15×104 µg/m3 (photocopy center B (The result
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Tina, Porwal. "PAINT POLLUTION HARMFUL EFFECTS ON ENVIRONMENT." International Journal of Research - GRANTHAALAYAH 3, no. 9 (Special Edition) (2017): 1–4. https://doi.org/10.5281/zenodo.847090.

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Every year we like to paint our home, furniture, etc. for decoration, protection, identification, sanitation. But we forget the impact of paint on our environment. This can cause some serious hazardous effect on our body like headaches, trigger allergies, asthmatic reactions, irritate skin, eyes, and put increased stress on vital organs such as the heart and not only paint but also its byproduct or by which paint creates are also more dangerous to us and our environment.
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49

Yin, Manfei, Xin Zhang, Yunfeng Li, et al. "Ambient ozone pollution at a coal chemical industry city in the border of Loess Plateau and Mu Us Desert: characteristics, sensitivity analysis and control strategies." PeerJ 9 (April 27, 2021): e11322. http://dx.doi.org/10.7717/peerj.11322.

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In this study, ambient ozone (O3) pollution characteristics and sensitivity analysis were carried out in Yulin, a city in the central area of the Loess Plateau during 2017 to 2019 summer. O3 concentrations increased for 2017 to 2019. Correlation and statistics analysis indicated high temperature (T > 25 °C, low relative humidity (RH < 60%), and low wind speed (WS < 3 m/s) were favorable for O3 formation and accumulation, and the O3 pollution days (MDA8 O3 > 160 µg/m3) were predominantly observed when the wind was traveling from the easterly and southerly. O3 concentration in urban
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Wu, Zhenfeng, Yanli Zhang, Junjie He, et al. "Dramatic increase in reactive volatile organic compound (VOC) emissions from ships at berth after implementing the fuel switch policy in the Pearl River Delta Emission Control Area." Atmospheric Chemistry and Physics 20, no. 4 (2020): 1887–900. http://dx.doi.org/10.5194/acp-20-1887-2020.

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Abstract. Limiting fuel sulfur content (FSC) is a widely adopted approach for reducing ship emissions of sulfur dioxide (SO2) and particulate matter (PM), particularly in emission control areas (ECAs), but its impact on the emissions of volatile organic compounds (VOCs) is still not well understood. In this study, emissions from ships at berth in Guangzhou, southern China, were characterized before and after the implementation of the fuel switch policy (IFSP) with an FSC limit of 0.5 % in the Pearl River Delta ECA (ECA-PRD). After IFSP, the emission factors (EFs) of SO2 and PM2.5 for the coast
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