DOI: 10.1002/2014GL061919
论文题名: Conversion of hydroperoxides to carbonyls in field and laboratory instrumentation: Observational bias in diagnosing pristine versus anthropogenically controlled atmospheric chemistry
作者: Rivera-Rios J.C. ; Nguyen T.B. ; Crounse J.D. ; Jud W. ; St. Clair J.M. ; Mikoviny T. ; Gilman J.B. ; Lerner B.M. ; Kaiser J.B. ; De Gouw J. ; Wisthaler A. ; Hansel A. ; Wennberg P.O. ; Seinfeld J.H. ; Keutsch F.N.
刊名: Geophysical Research Letters
ISSN: 0094-9498
EISSN: 1944-9229
出版年: 2014
卷: 41, 期: 23 起始页码: 8645
结束页码: 8651
语种: 英语
英文关键词: anthropogenic influence
; hydroperoxides
; interference
; Isoprene-oxidation
; secondary pollutant formation
Scopus关键词: Carbon
; Gas chromatography
; Isoprene
; Ketones
; Mass spectrometry
; Nitrogen oxides
; Organic carbon
; Oxidation
; Proton transfer
; Volatile organic compounds
; Wave interference
; Anthropogenic influence
; Chemical and physical properties
; Hydroperoxides
; Laboratory instrumentation
; Methyl vinyl ketones
; Pollutant formation
; Proton-transfer reaction mass spectrometries
; Volatile organic compound (VOC)
; Atmospheric chemistry
; anthropogenic effect
; atmospheric chemistry
; carbon cycle
; global change
; oxidation
; physicochemical property
; reaction kinetics
; volatile organic compound
英文摘要: Atmospheric volatile organic compound (VOC) oxidation mechanisms under pristine (rural/remote) and urban (anthropogenically-influenced) conditions follow distinct pathways due to large differences in nitrogen oxide (NOx) concentrations. These two pathways lead to products that have different chemical and physical properties and reactivity. Under pristine conditions, isoprene hydroxy hydroperoxides (ISOPOOHs) are the dominant first-generation isoprene oxidation products. Utilizing authentic ISOPOOH standards, we demonstrate that two of the most commonly used methods of measuring VOC oxidation products (i.e., gas chromatography and proton transfer reaction mass spectrometry) observe these hydroperoxides as their equivalent high-NO isoprene oxidation products - methyl vinyl ketone (MVK) and methacrolein (MACR). This interference has led to an observational bias affecting our understanding of global atmospheric processes. Considering these artifacts will help close the gap on discrepancies regarding the identity and fate of reactive organic carbon, revise our understanding of surface-atmosphere exchange of reactive carbon and SOA formation, and improve our understanding of atmospheric oxidative capacity. © 2014. American Geophysical Union. All Rights Reserved. URL: https://www.scopus.com/inward/record.uri?eid=2-s2.0-84921543461&doi=10.1002%2f2014GL061919&partnerID=40&md5=5c8b3fd8c4c4658a4800ae19945964d0
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/6762
Appears in Collections: 气候减缓与适应
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作者单位: Department of Chemistry, University of Wisconsin-Madison, Madison, WI, United States
Recommended Citation:
Rivera-Rios J.C.,Nguyen T.B.,Crounse J.D.,et al. Conversion of hydroperoxides to carbonyls in field and laboratory instrumentation: Observational bias in diagnosing pristine versus anthropogenically controlled atmospheric chemistry[J]. Geophysical Research Letters,2014-01-01,41(23).