globalchange  > 科学计划与规划
DOI: 10.1002/2015GL064650
论文题名:
Estimating the contribution of organic acids to northern hemispheric continental organic aerosol
作者: Yatavelli R.L.N.; Mohr C.; Stark H.; Day D.A.; Thompson S.L.; Lopez-Hilfiker F.D.; Campuzano-Jost P.; Palm B.B.; Vogel A.L.; Hoffmann T.; Heikkinen L.; Äijälä M.; Ng N.L.; Kimmel J.R.; Canagaratna M.R.; Ehn M.; Junninen H.; Cubison M.J.; Petäjä T.; Kulmala M.; Jayne J.T.; Worsnop D.R.; Jimenez J.L.
刊名: Geophysical Research Letters
ISSN: 0094-9175
EISSN: 1944-8906
出版年: 2015
卷: 42, 期:14
起始页码: 6084
结束页码: 6090
语种: 英语
英文关键词: AMS ; CIMS ; m/z 44 ; organic acids ; organic aerosol ; oxidized organic aerosol
Scopus关键词: Carboxylic acids ; Mass spectrometry ; Molecules ; Organic acids ; Spectrometry ; Urban growth ; Aerosol mass spectrometry ; AMS ; Chemical ionization mass spectrometry ; CIMS ; Empirical relationships ; m/z 44 ; Mass concentration ; Organic aerosol ; Aerosols ; aerosol ; carboxylic acid ; data set ; mass spectrometry ; Northern Hemisphere ; rural area ; urban area ; Colorado ; Finland ; Hyytiala ; Pirkanmaa ; United States
英文摘要: Using chemical ionization mass spectrometry to detect particle-phase acids and aerosol mass spectrometry (AMS) measurements from Colorado, USA, and two studies in Hyytiälä, Finland, we quantify the fraction of organic aerosol (OA) mass that is composed of molecules with acid functional groups (facid). Molecules containing one or more carboxylic acid functionality contributed approximately 29% (45-51%) of the OA mass in Colorado (Finland). Organic acid mass concentration correlates well with AMS m/z 44 (primarily CO2 +), a commonly used marker for highly oxidized aerosol. Using the average empirical relationship between AMS m/z 44 and organic acids in these three studies, together with m/z 44 data from 29 continental northern hemispheric (NH) AMS data sets, we estimate that molecules containing carboxylic acid functionality constitute on average 28% (range 10-50%) of NH continental OA mass with typically higher values at rural/remote sites and during summer and lower values at urban sites and during winter. © 2015. American Geophysical Union. All Rights Reserved.
URL: https://www.scopus.com/inward/record.uri?eid=2-s2.0-84938995196&doi=10.1002%2f2015GL064650&partnerID=40&md5=2f09a4834e831b37c9444ce7b9073f11
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/8791
Appears in Collections:科学计划与规划
气候变化与战略

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作者单位: Cooperative Institute for Research in Environmental Sciences, University of Colorado Boulder, Boulder, CO, United States

Recommended Citation:
Yatavelli R.L.N.,Mohr C.,Stark H.,et al. Estimating the contribution of organic acids to northern hemispheric continental organic aerosol[J]. Geophysical Research Letters,2015-01-01,42(14).
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