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Articoli di riviste sul tema "Sulphur dioxide"

Autore: Grafiati

Pubblicato: 4 giugno 2021

Ultima modifica: 25 luglio 2025

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1

Anstice, P. J. C., and J. F. Alder. "The Effect of Sulphur Dioxide on the Adsorption Properties of Activated Carbon towards Chloropicrin." Adsorption Science & Technology 15, no. 7 (1997): 541–50. http://dx.doi.org/10.1177/026361749701500707.

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Sulphur dioxide is believed to be adsorbed on activated carbons in both physically and chemically bound states. Sulphuric acid and a variety of oxygenated and hydrated sulphur oxide species are believed to be present on humidified carbons exposed to sulphur dioxide. Samples of ASC/T impregnated carbons were exposed to sulphur dioxide mixtures in humid air at 80% RG and 22°C. The sulphur dioxide-loaded carbons were then exposed to chloropicrin challenge at 5 mg/dm3 in air at 80% RH and 22°C and the chloropicrin breakthrough times measured. A relationship was found between the extra mass gain of

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2

Vale, Allister. "Sulphur Dioxide." Medicine 31, no. 10 (2003): 74. http://dx.doi.org/10.1383/medc.31.10.74.27817.

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Vale, Allister. "Sulphur dioxide." Medicine 35, no. 12 (2007): 656. http://dx.doi.org/10.1016/j.mpmed.2007.09.012.

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4

Vale, Allister. "Sulphur dioxide." Medicine 40, no. 3 (2012): 158. http://dx.doi.org/10.1016/j.mpmed.2011.12.009.

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5

Palmer, Anne S., Vin I. Morgan, Mark A. J. Curran, Tas D. van Ommen, and Paul A. Mayewski. "Antarctic volcanic flux ratios from Law Dome ice cores." Annals of Glaciology 35 (2002): 329–32. http://dx.doi.org/10.3189/172756402781816771.

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AbstractExplosive volcanic eruptions can inject large quantities of sulphur dioxide into the stratosphere. the aerosols that result from oxidation of the sulphur dioxide can produce significant cooling of the troposphere by reflecting or absorbing solar radiation. It is possible to obtain an estimate of the relative stratospheric sulphur aerosol concentration produced by different volcanoes by comparing sulphuric acid fluxes determined by analysis of polar ice cores. Here,we use a non-sea-salt sulphate time series derived from three well-dated Law Dome ice cores to investigate sulphuric acid f

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6

Nyitrai, Diána Sárdy, Zsuzsanna Varga, Annamária Sólyom-Leskó, et al. "Analysis of a Special Sulphite-Producing Yeast Starter after Fermentation and during Wine Maturation." Applied Sciences 12, no. 17 (2022): 8848. http://dx.doi.org/10.3390/app12178848.

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In the present study, we investigated the extent to which specific sulphur dioxide-producing wine yeasts produce SO2 during alcoholic fermentation and whether the SO2 they produce is sufficient to prevent oxidation during wine storage. Fermentation was carried out at 12 °C and 20 °C. After inoculation with yeast, the evolution of free and total sulphurous acid concentrations, acetaldehyde concentrations (11.6–46.9 mg L−1) and total polyphenol concentrations (137.4–244.7 mg L−1), including leucoanthocyanin and catechin concentrations (leucoanthocyanidin: 8.5–75.1 mg L−1; catechin: 70.8–115.4 mg

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7

Grace, B., T. J. Gillespie, and K. J. Puckett. "Uptake of gaseous sulphur dioxide by the lichen Cladina rangiferina." Canadian Journal of Botany 63, no. 4 (1985): 797–805. http://dx.doi.org/10.1139/b85-102.

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Samples of the lichen Cladina rangiferina were exposed to various concentrations of sulphur dioxide in a fumigation cuvette system for time periods ranging from 1 to 18 h. The cuvette system provided airstreams which, within the limits of measurement, had identical flow rates, temperatures, and relative humidities. Sulphur dioxide was added to one airstream as a treatment, while the other remained free of sulphur dioxide for control purposes. In some experiments, wind speed could be varied from 8 to 250 cm∙s−1 in a small wind tunnel placed in the fumigation cuvette. The system allowed for the

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8

BHARDWAJ, MUKESH K., JOGANDER SINGH, and ANJUL SINGH. "IMPACT OF SULPHUR DIOXIDE EXPOSURE ON PHOTOSYNTHETIC PIGMENTS IN VIGNA MUNGO." Pollution Research 42, no. 01 (2023): 38–42. http://dx.doi.org/10.53550/pr.2023.v42i01.007.

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The present studies carried out on Vigna mungo regarding impacts of SO2 exposure on photosynthetic pigments clearly revealed that sulphur dioxide has deleterious effects on different photosynthetic pigments. These effects had become more significant when the plants were exposed to higher doses of sulphur dioxide. During the present investigation four concentrations, i.e. 0.1, 0.3, 0.5 and 0.7 ppm of sulphur dioxide were taken in consideration and their impact on biochemical contents i.e chlorophyll ‘a’, chlorophyll ‘b’, total chlorophyll and carotenoids in Vigna mungo was studied. The observat

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9

Kovacs, Marius, Lorand Toth, and Lăutaru Vlad. "Time evolution of sulphur dioxide concentration generated by solid fuel combustion systems during the cold periods of the year." MATEC Web of Conferences 389 (2024): 00042. http://dx.doi.org/10.1051/matecconf/202438900042.

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About 99% of sulphur dioxide present in the atmosphere comes from anthropogenic activities, the main source being industrial activity that processes sulphur materials, including burning fuels (coal, oil or gas), thus releasing sulphur dioxide into the air. The purpose of this paper is to monitor the concentration of sulphur dioxide during two seasons, in the ambient air of Petroșani, with the aim of highlighting the possible atmospheric pollution caused by thermal power plants that use solid fuel during the winter period. The monitoring periods were distributed over a period of 6 months (three

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10

Zhang, Hongyu, and Yunqian Cui. "Study of Sulphides Production Affecting the Fermentation Process of the Lager Beer." International Journal of Biology and Life Sciences 3, no. 1 (2023): 4–8. http://dx.doi.org/10.54097/ijbls.v3i1.9481.

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In the lager brewing production process, volatile sulphides such as sulphur dioxide, hydrogen sulphide, thiols and thioesters are produced by yeast metabolism during the fermentation of lager beer. Fluctuations in malt raw materials, yeast strain characteristics and fermentation process parameter adjustments can all have an impact on sulphides, and the concentration of sulphides in finished beer can have a negative impact on the sensory tasting of lager beer. This study investigated the fermentation of sulphides in lager beer under the conditions of dissolved wort oxygen, yeast recovery, ferme

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11

Kumar, Neeraj, and Mukesh Kumar Bhardwaj. "Effect of Various Concentrations of Sulphur Dioxide Pollution on Chlorophyll Pigment of Pisum sativum L. (PEA)." Journal of Advances and Scholarly Researches in Allied Education 21, no. 6 (2024): 154–56. https://doi.org/10.29070/fypz4s11.

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More significant are the impacts of SO2 pollution on biochemical and agronomic processes. A lot of people in India and other nations rely on peas (Matar) as a protein source. Sulphur dioxide has a negative effect on pea plant species, causing a decrease in their total biochemical pigments. The present investigation examined the effects of different concentrations of sulphur dioxide on the chlorophyll content of pea plant leaves found reduction in chlorophyll content- chl-a, chl-b at higher concentration of sulphur dioxide.

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12

Fišera, Miroslav, Květoslava Šustová, Pavel Tvrzník, et al. "REDUCE THE SULPHUR DIOXIDE CONTENT OF WINE BY BIOLOGICAL PROCESS IN RELATION TO THE CONTENT OF POLYPHENOLIC SUBSTANCES." Journal of microbiology, biotechnology and food sciences 11, no. 5 (2022): e5975. http://dx.doi.org/10.55251/jmbfs.5975.

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In recent years, many papers have paid attention to the bioactive compounds, particularly to the antioxidant activity of polyphenolic compounds in food and beverages, due to their positive effect on human body. Therefore, the phenolic compounds and their antioxidant capacity become an important quality parameter, especially in niche markets concerned with health benefits.  Wine is an excellent source of various classes of polyphenols. The phenolic compounds are responsible for the sensory characteristics, particularly colour, astringency, bitterness, and aroma, too. Another very importan

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13

PADMANABHAMURTY, B., and RN GUPTA. "Estimation of long term concentrations of SO2 from Mathura refinery with Gaussian diffusion model." MAUSAM 37, no. 3 (1986): 347–52. http://dx.doi.org/10.54302/mausam.v37i3.2453.

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The ground level long term concentrations (ug/m3) to obtain spatial distribution of sulphur dioxide around the Mathura refinery have been computed for all four seasons using steady state Gaussian diffusion model valid for point sources. The monitored data of sulphur dioxide at four points in different sectors at different distances collected prior to and after the commissioning of the refinery have also been utilised. It is seen that there is no significant increase in sulphur dioxide concentration after commissioning of the refinery and the model also confirms that the long term concentration

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14

Rakitskaya, Tatyana L., Tatyana A. Kiose, E. V. Kameneva, and V. Ya Volkova. "Natural Clinoptilolite Based Solid-State Compositions for Low-Temperature Air Purification from Sulphur Dioxide." Solid State Phenomena 230 (June 2015): 291–96. http://dx.doi.org/10.4028/www.scientific.net/ssp.230.291.

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Natural clinoptilolite (N-CLI) and N-CLI based solid-state compositions containing copper(II) chloride and halide ions (X- = Cl-, Br- or I-) were investigated by X‑ray diffraction phase analysis, IR spectroscopy, thermogravimetry, water vapour adsorption, and pH‑metry. After that, they were tested in the reaction of low-temperature sulphur dioxide oxidation with air oxygen. It has been found that N-CLI has no protective properties in respect of sulphur dioxide whereas CuCl2‑KX/N-CLI compositions have the significant protective activity in the process of air purification from sulphur dioxide in

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15

Mulhauser, F., and H. Schneuwly. "Muon transfer to sulphur dioxide." Journal of Physics B: Atomic, Molecular and Optical Physics 26, no. 22 (1993): 4307–32. http://dx.doi.org/10.1088/0953-4075/26/22/032.

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16

Ponce de Leon, A., and H. R. Anderson. "Sulphur dioxide levels and asthma." Thorax 49, no. 10 (1994): 1042. http://dx.doi.org/10.1136/thx.49.10.1042.

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17

Rose, Anthony H. "Sulphur dioxide and other preservatives." Journal of Wine Research 4, no. 1 (1993): 43–47. http://dx.doi.org/10.1080/09571269308717947.

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18

Pavlinec, J., and M. Lazár. "Polypropylene Modified with Sulphur Dioxide." Journal of Macromolecular Science, Part A 35, no. 7 (1998): 1055–67. http://dx.doi.org/10.1080/10601329808002100.

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19

Binbrek, O. S., and A. Anderson. "Lattice Dynamics of Sulphur Dioxide." physica status solidi (b) 162, no. 2 (1990): 421–27. http://dx.doi.org/10.1002/pssb.2221620212.

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20

Gill, J. Bernard, David C. Goodall, and Brian Jeffreys. "Reactions in mixed non-aqueous solutions containing sulphur dioxide. Part 8. Phase studies of sulphur dioxide–dimethyl sulphoxide and sulphur dioxide–dimethylformamide mixtures." J. Chem. Soc., Dalton Trans., no. 12 (1986): 2603–5. http://dx.doi.org/10.1039/dt9860002603.

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21

Marcewicz-Kuba, Agnieszka. "Effect of the synthetic zeolite modification on its physicochemical and catalytic properties in the preparation of the catalysts effectively removing sulphur dioxide from exhaust gases." Polish Journal of Chemical Technology 18, no. 2 (2016): 40–45. http://dx.doi.org/10.1515/pjct-2016-0027.

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Abstract This work presents the research results of the influence of modification deSONOx type catalyst of the sulfur dioxide emissions in the process of the hard coal combustion. The addition of zeolite catalysts modified by transition metal ions: V, Mg, activated by zinc sorbent with or without graphite addition caused the deeper burning of coal grains. The addition of the deSOx catalysts to the coal resulted in lowered sulphur dioxide emission. The addition of unmodified zeolite to coal during combustion reduced sulphur dioxide emission at about 5%. The modification of the support by both V

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22

Durmisevic, Smajil, and Jasminka Durmisevic-Serdarevic. "Ambient air quality and the frequency of physician visits by preschool children." Medical review 60, no. 7-8 (2007): 387–90. http://dx.doi.org/10.2298/mpns0708387d.

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Introduction. Ambient air pollution in the town of Kakanj, mostly of industrial origin, has become a major reason for increased use of health care services by children under the age of six years. The aim of this study was to examine the correlation between ambient concentrations of sulphur dioxide (SO2), suspended particles and nitrogenoxides (NOx), and the frequency/number of visits to health care institutions by children under the age of six years. Material and methods. The investigation was carried out in the period from January to December 2003, in the area of Kakanj and Brnjic. We examine

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23

ROBINSON, P. H., and J. J. KENNELLY. "AMMONIA OR SULPHUR DIOXIDE TREATMENT OF HIGH-MOISTURE BARLEY ON IN SITU RUMEN DEGRADABILITY AND IN SITU WHOLE-TRACT DIGESTIBILITY." Canadian Journal of Animal Science 68, no. 3 (1988): 779–86. http://dx.doi.org/10.4141/cjas88-087.

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High-moisture barley (HMB) was ensiled in polyethylene silage bags. Treatments applied to 30% moisture HMB as a percentage of dry matter (DM) were: none, 1% ammonia, 2% ammonia, and 1.5% sulphur dioxide. A fifth treatment was the addition of 1.5% sulphur dioxide to 20% moisture HMB. Barley samples were ruminally incubated to estimate degradability of DM and nitrogen (N). Ruminally incubated bags were also introduced to the duodenal cannulae and collected in feces to estimate true whole-tract digestion. Sulphur dioxide treatment, or moisture content, had no influence on ruminal degradability, w

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24

Szyszkowicz, Mieczyslaw, and Eugeniusz Porada. "Ambient Sulphur Dioxide and Female ED Visits for Migraine." ISRN Neurology 2012 (March 15, 2012): 1–5. http://dx.doi.org/10.5402/2012/279051.

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Ambient sulphur dioxide (SO2) concentrations may affect the number of female emergency department (ED) visits for migraine. ED visits diagnosed as migraine among females in two cities in Canada, Toronto (N=704) and Ottawa (N=3,358), were analyzed. In the study case-crossover design was used. Conditional logistic regression was realized to estimate odds ratios (ORs) and their 95% confidence intervals (CIs) relative to an increase in an interquartile range (IQR, in Toronto IQR=2.9 ppb, in Ottawa IQR=3.9 ppb) of sulphur dioxide. In the constructed conditional logistic regression models, temperatu

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25

Kane, Amadou, Issa Samb, Cheikh Ahmed Tidiane Ndiaye, et al. "Determination of the Sulfur Content of Gasoline from Four Major Fuel Distributors in Dakar." Asian Journal of Physical and Chemical Sciences 12, no. 3 (2024): 1–9. http://dx.doi.org/10.9734/ajopacs/2024/v12i3226.

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Sulfur dioxide is an acidifying gaseous pollutant. It contributes to the acidification of the environment. When emitted into the air and in the presence of water, sulfur dioxide forms sulfuric acid, which contributes to the phenomenon of acid rain. Acidifying substances disrupt the composition of air, surface water and soil. Sulphur dioxide (SOx) emissions are closely linked to the use of fuels containing sulphur, and the maximum permitted sulphur content is one of the most closely monitored fuel parameters. In this article, we determined the sulfur content of gasoline samples taken from four

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26

KRISHNA, KUMAR PANDEY. "A Molecular Orbital Analysis of the Bonding of Sulphur Monoxide and Sulphur Dioxide towards Rhodium." Journal of Indian Chemical Society Vol. 70, Nov-Dec 1993 (1993): 987–89. https://doi.org/10.5281/zenodo.5948452.

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School of Chemistry, Devi Ahilya University, Khandwa Road, lndore-452 001 <em>Manuscript received 9 July 1993</em> CNDO/2 molecular orbital calculations have been performed on the systems <em>trans</em>-[Rh(L)Cl(PH<sub>3</sub>)<sub>2]</sub> (L =SO, SO<sub>2</sub>) in order to investigate the nature and energetics of the bonding between rhodium and SO or SO<sub>2</sub> ligand. The computed trends for Rh-·S S-O and Rh-Cl bond strengths, as measured by Wiberg indices and charge distributions suggest that (i) the SO ligand is a better σ-donor and poor \(\pi\)-acceptor than the SO

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27

Seaward, M. R. D. "Lichens and sulphur dioxide air pollution: field studies." Environmental Reviews 1, no. 2 (1993): 73–91. http://dx.doi.org/10.1139/a93-007.

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The recent spread of air pollution, particularly sulphur dioxide, throughout Europe and elsewhere over the past 200 years is accurately reflected by the decline of lichens. Lichens have proved highly versatile for monitoring not only increasing but also decreasing levels of air pollution in general and, more recently, qualitative differences brought about by changes in energy policies, clean air legislation, and agricultural practices. The use of lichens as biological monitors of sulphur dioxide pollution over the past 150 years is reviewed, and techniques such as zonal mapping, pollution inde

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28

Machado de Oliveira, Camila, Adilson Oliveira, Jeane Almeida do Rosário, Agenor de Noni Jr., and Michael Peterson. "Purification Route of Pyrite from Coal Mining." Materials Science Forum 869 (August 2016): 155–58. http://dx.doi.org/10.4028/www.scientific.net/msf.869.155.

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Pyrite, mineral largely found in nature, is considered a solid waste when is obtained from the coal mining. However, can be precursor of products like: sulphur, sulphuric acid, hematite, sulphur dioxide, fertilizers and iron sulfates. Several studies also point it property of semiconduction and it use in solar cells. Increase it purity level is important for transforming it in products with more aggregate value. Thus, the present work suggests a purification route for the reduction in soluble salts in water, organics and quartz associated with pyrite from the coal mining beneficiation. The use

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29

Kicińska, Bożena. "Dependence of Air Quality Conditions in Cities in North-Western Poland on the Direction of Air Inflow." Miscellanea Geographica 12, no. 1 (2006): 81–86. http://dx.doi.org/10.2478/mgrsd-2006-0009.

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Abstract This paper presents the dependence of air pollution with sulphur dioxide and nitrogen dioxide on wind direction in Szczecin, Łeba, Elbląg and Zielona Góra in the period 1993-1999. It has been shown that the most disadvantageous air quality conditions in the cities listed above are on the days with air inflow from south-east, and the most advantageous on the days with advection from north-west. This dependence is particularly evident in the case of pollution with sulphur dioxide, especially in the cold half-year.

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Stražanac, Danijela, Darja Sokolić, Sandra Bašić, Brigita Hengl, and Andrea Gross-Bošković. "Konzerviranje rakova upotrebom sumpornog dioksida i sulfita (E 220 – E 228)." Meso 21, no. 3 (2019): 269–78. http://dx.doi.org/10.31727/m.21.3.5.

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Food additives are substances of known chemical composition that are neither consumed as food nor typical food ingredients, regardless of their nutritional value, but are instead added to foodstuffs to perform certain technological functions and retain certain sensory properties of food. Additives that are widely applied in food industry include sulphur dioxide (SO2) and sulphites (E 220 – E 228). Sulphur dioxide and its derivatives are added to foodstuffs in order to inhibit and control the growth of microorganisms, for the purpose of prevention of non-enzymatic browning and inhibition of enz

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31

Roslyakov, P. V., and O. E. Kondratieva. "Technical possibilities of ash and sulphur oxides emission reduction at Russian coal-fired thermal power plants." IOP Conference Series: Earth and Environmental Science 1061, no. 1 (2022): 012035. http://dx.doi.org/10.1088/1755-1315/1061/1/012035.

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Abstract The issues of the introduction of the best available technologies (BAT) at Russian coal-fired thermal power plants in accordance with the recommendations of the current information and technical handbook ITS 38-2017 are considered. It is shown that the technological indicators of ITS 38-2017 on emissions of solid fuel ash and sulphur dioxide do not solve the problem of reducing the negative impact on the environment. The analysis of the properties of burnt coals and available technologies for sulphur dioxides and ash cleaning of flue gases was carried out in order to determine new tec

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Birgen, J., G. Wafula, A. Yusuf, and J. Onyatta. "Assessment of Sulphur Dioxide Levels in Selected Sites in Athi River, Kenya." International Journal of Trend in Scientific Research and Development 1, no. 5 (2017): 416–22. https://doi.org/10.31142/ijtsrd2320.

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Industrialization, economic growth, urbanization and population growth have been responsible for air pollution in developing countries. The discharge of harmful chemicals and increased combustion of fossil fuels, affect both the physical environment and the public health. Air pollution effects are both acute and chronic on human health, ranging from minor upper respiratory irritation to chronic respiratory and heart disease, lung cancer, acute respiratory infections in children and chronic bronchitis in adults. A study was conducted to assess the effect of sulfur dioxide on air quality at thre

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Hansmann, C. F., and P. C. Fourie. "DEHYDRATION OF APRICOTS WITHOUT SULPHUR DIOXIDE." Acta Horticulturae, no. 488 (May 1999): 585–92. http://dx.doi.org/10.17660/actahortic.1999.488.95.

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DVOŘÁK, Josef, Pavel DOSTÁLEK, Karel ŠTĚRBA, et al. "Significance of sulphur dioxide in beer." Kvasny Prumysl 52, no. 11-12 (2006): 346–48. http://dx.doi.org/10.18832/kp2006028.

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Selvapathy, P., T. V. Ramakrishna, N. Balasubramanian, and R. Pitchai. "Extraction-spectrophotometric determination of sulphur dioxide." Analyst 112, no. 8 (1987): 1139. http://dx.doi.org/10.1039/an9871201139.

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Balasubramanian, N., and B. S. M. Kumar. "Extraction–spectrophotometric determination of sulphur dioxide." Analyst 116, no. 2 (1991): 207–11. http://dx.doi.org/10.1039/an9911600207.

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Usseglio‐Tomasset, L. "Properties and use of sulphur dioxide." Food Additives and Contaminants 9, no. 5 (1992): 399–404. http://dx.doi.org/10.1080/02652039209374090.

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Wolfbeis, Otto S., and Ashutosh Sharma. "Fibre-optic fluorosensor for sulphur dioxide." Analytica Chimica Acta 208 (1988): 53–58. http://dx.doi.org/10.1016/s0003-2670(00)80735-7.

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WEDZICHA, B., and D. ADAMU. "Reactivity of vegetables towards sulphur dioxide." Food Chemistry 26, no. 3 (1987): 159–73. http://dx.doi.org/10.1016/0308-8146(87)90032-x.

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Copestake, Philip. "Sulphur dioxide, acid aerosols and particulates." Food and Chemical Toxicology 31, no. 4 (1993): 317–18. http://dx.doi.org/10.1016/0278-6915(93)90085-d.

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NORDENSON, I., G. BECKMAN, L. BECKMAN, L. ROSENHALL, and N. STJERNBERG. "Is exposure to sulphur dioxide clastogenic?" Hereditas 93, no. 1 (2009): 161–64. http://dx.doi.org/10.1111/j.1601-5223.1980.tb01056.x.

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Hansmann, C. F., Elizabeth Joubert, and T. J. Britz. "DEHYDRATION OF PEACHES WITHOUT SULPHUR DIOXIDE." Drying Technology 16, no. 1-2 (1998): 101–21. http://dx.doi.org/10.1080/07373939808917394.

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Hansmann, C. F. "DEHYDRATION OF PEARS WITHOUT SULPHUR DIOXIDE." Drying Technology 16, no. 8 (1998): 1665–85. http://dx.doi.org/10.1080/07373939808917485.

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Edwards, C. J., F. Lyth Hudson, and J. A. Hockey. "Sorption of sulphur dioxide by paper." Journal of Applied Chemistry 18, no. 5 (2007): 146–48. http://dx.doi.org/10.1002/jctb.5010180506.

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Kotb, A. K. "Adsorption of sulphur dioxide on coal." Journal of Applied Chemistry 20, no. 5 (2007): 147–52. http://dx.doi.org/10.1002/jctb.5010200502.

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Fahad, Majid Jasim, and Asaad Kadhim Abdullah. "The Relationship Between Sulphur Dioxide and Trehalose and Their Effect on Some Biochemical Characteristics of Tomato Plants." Asian Journal of Water, Environment and Pollution 19, no. 4 (2022): 81–90. http://dx.doi.org/10.3233/ajw220059.

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Abstract (sommario):

Sulphur oxide is one of the most serious problems of air pollution on the environment, especially human and plant health. This study was conducted to clarify the effect of sulphur dioxide (SO2) stress on some of the biochemical characteristics of tomato plant, Lycopersicum esculentum Mill. The plants were exposed to three doses of SO2 (0, 5, 10 mg.m-3), the exposure period was inclusive to 1 and 2 hours for each day. In order to reduce the toxicity of sulphur dioxide, the plants were treated by spraying them with trehalose sugar at concentrations of 0,50 and 100 mg.L-1. The results of the expe

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47

Muzhaffar, Muhammad Hanief, and Muhammad Arif Budiyanto. "Exploring Eco-Friendly Paths: A Comparative Study of Emissions in Medium Speed Diesel Engines Utilizing Alternative Fuels through Simulation Analysis." Journal of Advanced Research in Fluid Mechanics and Thermal Sciences 124, no. 2 (2024): 235–47. https://doi.org/10.37934/arfmts.124.2.235247.

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Abstract (sommario):

In the ship industry, emissions from marine activities have been shown to influence air quality and climate, with pollutants such as sulphur dioxide (SO2), nitrogen oxides (NOₓ), and Carbon Dioxide (CO2). the International Maritime Organization (IMO) has implemented MARPOL Annex VI to reduce emissions from maritime activities, one of which is using alternative fuels. With the need of sustainable energy source of reducing emissions, the evaluation of alternative fuels becomes crucial. This study presents a comparative analysis of performance and environmental emissions from medium speed diesel

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48

Grace, B., T. J. Gillespie, and K. J. Puckett. "Sulphur dioxide threshold concentration values for Cladina rangiferina in the Mackenzie Valley, N.W.T." Canadian Journal of Botany 63, no. 4 (1985): 806–12. http://dx.doi.org/10.1139/b85-103.

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Abstract (sommario):

A simulation model for the prediction of threshold concentration values of gaseous sulphur dioxide for damage to Cladina rangiferina over a 24-h period is presented. The model requires inputs of near surface relative humidities and air temperatures as well as lichen surface temperatures, and nearby airport wind speeds. An initial value of percent lichen water content must also be specified. Studies of lichen water relationships provided expressions utilized in the model for the calculation of the percent lichen water content. The model was applied to four microclimatically different days for a

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49

Zaker, Mohammad Reza, Clémence Fauteux-Lefebvre, and Jules Thibault. "Modelling and Multi-Objective Optimization of the Sulphur Dioxide Oxidation Process." Processes 9, no. 6 (2021): 1072. http://dx.doi.org/10.3390/pr9061072.

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Abstract (sommario):

Sulphuric acid (H2SO4) is one of the most produced chemicals in the world. The critical step of the sulphuric acid production is the oxidation of sulphur dioxide (SO2) to sulphur trioxide (SO3) which takes place in a multi catalytic bed reactor. In this study, a representative kinetic rate equation was rigorously selected to develop a mathematical model to perform the multi-objective optimization (MOO) of the reactor. The objectives of the MOO were the SO2 conversion, SO3 productivity, and catalyst weight, whereas the decisions variables were the inlet temperature and the length of each cataly

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50

Salvitti, Chiara, Federico Pepi, Anna Troiani, Marzio Rosi, and Giulia de Petris. "The Peroxymonocarbonate Anion HCO4− as an Effective Oxidant in the Gas Phase: A Mass Spectrometric and Theoretical Study on the Reaction with SO2." Molecules 28, no. 1 (2022): 132. http://dx.doi.org/10.3390/molecules28010132.

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Abstract (sommario):

The peroxymonocarbonate anion, HCO4−, the covalent adduct between the carbon dioxide and hydrogen peroxide anion, effectively reacts with SO2 in the gas phase following three oxidative routes. Mass spectrometric and electronic structure calculations show that sulphur dioxide is oxidised through a common intermediate to the hydrogen sulphate anion, sulphur trioxide, and sulphur trioxide anion as primary products through formal HO2−, oxygen atom, and oxygen ion transfers. The hydrogen sulphite anion is also formed as a secondary product from the oxygen atom transfer path. The uncommon nucleophil

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