Emissions of formaldehyde and nitrogen dioxide from liquefied petroleum gas combustion
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Measurements of nitrogen and sulfur dioxide using passive sampler over 12 months in Samsun, Turkey, are compared with SO2 and NO2 concentrations obtained from a co-located chemiluminescence analyzer. The concentrations of Sulfur and nitrogen dioxide in the ambient air during the period from November 2009 to September 2010 are analyzed.The highest value for annual NO2 and SO2 averages of passive sampler was 29.65 μg/m(3) and 21.01 μg/m(3) for exposures of 2-weeks at an industrial site. The maximum monthly concentration for SO2 was observed at the 10(th) measurement station with 44.19 μg/m(3) for August. The maximum monthly concentration for NO2 was observed on the 3(rd) measurement station with 42.83 μg/m(3) for November. A negative correlation between nitrogen dioxide concentrations and temperature (R(2) = -0.5489) was estimated. A positive correlation between nitrogen dioxide measurement with passive sampler and continuous measurement (R(2) = 0.6571) was estimated.
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ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTSpectroscopic Analysis of Industrial Emissions for Nitric Oxide, Nitrogen Dioxide, and Sulfur DioxideA. J. Haagen-Smit, Vincent Taylor, and Margaret BrunelleCite this: Ind. Eng. Chem. 1959, 51, 6, 772Publication Date (Print):June 1, 1959Publication History Published online1 May 2002Published inissue 1 June 1959https://pubs.acs.org/doi/10.1021/ie50594a036https://doi.org/10.1021/ie50594a036research-articleACS PublicationsRequest reuse permissionsArticle Views30Altmetric-Citations1LEARN ABOUT THESE METRICSArticle Views are the COUNTER-compliant sum of full text article downloads since November 2008 (both PDF and HTML) across all institutions and individuals. These metrics are regularly updated to reflect usage leading up to the last few days.Citations are the number of other articles citing this article, calculated by Crossref and updated daily. Find more information about Crossref citation counts.The Altmetric Attention Score is a quantitative measure of the attention that a research article has received online. Clicking on the donut icon will load a page at altmetric.com with additional details about the score and the social media presence for the given article. Find more information on the Altmetric Attention Score and how the score is calculated. Share Add toView InAdd Full Text with ReferenceAdd Description ExportRISCitationCitation and abstractCitation and referencesMore Options Share onFacebookTwitterWechatLinked InRedditEmail Other access options Get e-Alerts
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The concentration of atmospheric pollutants, sulfur dioxide and nitrogen dioxide, were monitored by passive sampler with spectrophotometric determination method. The results were compared with active sampling method. It was found that the two methods got the same results. The adsorption of sulfur dioxide and nitrogen dioxide by sorbent-saturated filter paper was also studied.
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Sulfur dioxide, a reducing agent found in urban air, might be expected to react with the oxidizing atmosphere produced by photochemical smog. It does not, however, react directly with either ozone or nitrogen dioxide in air although these reactions can occur in solution or on surfaces. However, sulfur dioxide does react with other, less well-identified oxidants which are formed during the photochemical smog reaction process. One mechanism involves the reaction of SO2 with NO3 (or N2O5) formed as a result of the reaction of NO2 with O3. The interactions of SO2 with photochemical smog were investigated in environmental chambers. A regression analysis, carried out on the data from 23 chamber experiments with 1-butene, indicated that the effects of SO2 on oxidant production depend on the concentrations of water vapor, initial nitrogen dioxide, and sulfur dioxide. The effect also depends on the type of hydrocarbon. Sulfur dioxide was found to reduce the maximum oxidant obtained from 1-butene, 1-heptene, and 2,2,4-trimethylpentane, but to increase the oxidant obtained from toluene. In all cases, however, the maximum NO2 concentration was lower when SO2 was present. The reaction mechanisms involved in producing these effects are discussed.
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