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DOI	10.1016/j.atmosenv.2021.118504
	Methanesulfonic acid and sulfuric acid Aerosol Formed through oxidation of reduced sulfur compounds in a humid environment
	Van Rooy P.; Drover R.; Cress T.; Michael C.; Purvis-Roberts K.L.; Silva P.J.; Nee M.J.; Cocker D.
发表日期	2021
ISSN	1352-2310
卷号	261
英文摘要	Particulate sulfuric acid and methanesulfonic acid (MSA) are known to form through oxidation of reduced sulfur compounds, however, the mechanisms by which these compounds form are not well understood. Additionally, the aerosol yields and ratio of MSA to sulfuric acid particulate formation are not well documented, making it difficult to estimate the health and climate impacts of reduced sulfur compounds. To investigate these unknowns, dimethylsulfide (DMS) and dimethyldisulfide (DMDS) were oxidized, using a variety of oxidants, in a 37.5 cubic meter Teflon environmental chamber with relative humidity ranging from 2% to 55%. The mass fraction of particulate MSA was estimated based on unique aerosol fragments, at m/z 79 and 96, measured by a High Resolution Time-of-Flight Mass Spectrometer. MSA to sulfuric acid particulate ratios varied depending on initial conditions. This study revealed that substantial water vapor is necessary to form MSA. The mass fraction of MSA increases in the presence of NOx. Nitrate radical oxidation of DMS and DMDS resulted in nearly 100% of the aerosol estimated to be MSA, suggesting nighttime chemistry may play an important role in ambient MSA formation. This study builds upon results from similar experiments, presented in Van Rooy et al. (2021), which were conducted under extreme dry conditions. © 2021
关键词	Environmental chamber Methanesulfonic acid Reduced sulfur Secondary aerosol Sulfuric acid
语种	英语
scopus关键词	Mass spectrometers; Organic acids; Oxidation; Particles (particulate matter); Sulfur compounds; Sulfuric acid; Acid aerosols; Dimethyl disulfides; Dimethyl sulphide; Humid environment; Mass-fraction; Methanesulphonic acid; Particulates; Reduced sulphur; Reduced sulphur compounds; Secondary aerosols; Aerosols; dimethyl disulfide; dimethyl sulfide; mesylic acid; nitrate; polytetrafluoroethylene; sulfur derivative; sulfuric acid; water; aerosol formation; humid environment; oxidation; reduction; sulfate-reducing bacterium; sulfur compound; sulfuric acid; aerosol; Article; climate; controlled study; humidity; oxidation; time of flight mass spectrometry; water vapor
来源期刊	ATMOSPHERIC ENVIRONMENT
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/248328
作者单位	Department of Chemical and Environmental Engineering, Bourns College of Engineering, University of California, Riverside, CA 92521, United States; Bourns College of Engineering, Center for Environmental Research and Technology (CE-CERT), Riverside, CA 92507, United States; Claremont McKenna, Pitzer, and Scripps Colleges, W.M. Keck Science Department, Claremont, CA 91711, United States; United States Department of Agriculture – Agricultural Research Service, Food Animal Environmental Systems Research Unit, Bowling Green, KY 42101, United States; Western Kentucky University, Department of Chemistry, 1906 College Heights Blvd., Bowling Green, KY 42101, United States
推荐引用方式 GB/T 7714	Van Rooy P.,Drover R.,Cress T.,et al. Methanesulfonic acid and sulfuric acid Aerosol Formed through oxidation of reduced sulfur compounds in a humid environment[J],2021,261.
APA	Van Rooy P..,Drover R..,Cress T..,Michael C..,Purvis-Roberts K.L..,...&Cocker D..(2021).Methanesulfonic acid and sulfuric acid Aerosol Formed through oxidation of reduced sulfur compounds in a humid environment.ATMOSPHERIC ENVIRONMENT,261.
MLA	Van Rooy P.,et al."Methanesulfonic acid and sulfuric acid Aerosol Formed through oxidation of reduced sulfur compounds in a humid environment".ATMOSPHERIC ENVIRONMENT 261(2021).