globalchange  > 科学计划与规划
DOI: 10.1002/2015GL063693
论文题名:
Elemental composition of organic aerosol: The gap between ambient and laboratory measurements
作者: Chen Q.; Heald C.L.; Jimenez J.L.; Canagaratna M.R.; Zhang Q.; He L.-Y.; Huang X.-F.; Campuzano-Jost P.; Palm B.B.; Poulain L.; Kuwata M.; Martin S.T.; Abbatt J.P.D.; Lee A.K.Y.; Liggio J.
刊名: Geophysical Research Letters
ISSN: 0094-9484
EISSN: 1944-9215
出版年: 2015
卷: 42, 期:10
起始页码: 4182
结束页码: 4189
语种: 英语
英文关键词: aqueous-phase SOA ; elemental composition ; elemental ratios ; organic aerosol ; SOA
Scopus关键词: Aerosols ; Carbon ; Aqueous phase ; Elemental compositions ; Elemental ratios ; Organic aerosol ; SOA ; Laboratories ; aerosol composition ; aircraft ; ambient air ; data set ; laboratory method ; oxidation
英文摘要: A large data set including surface, aircraft, and laboratory observations of the atomic oxygen-to-carbon (O:C) and hydrogen-to-carbon (H:C) ratios of organic aerosol (OA) is synthesized and corrected using a recently reported method. The whole data set indicates a wide range of OA oxidation and a trajectory in the Van Krevelen diagram, characterized by a slope of -0.6, with variation across campaigns. We show that laboratory OA including both source and aged types explains some of the key differences in OA observed across different environments. However, the laboratory data typically fall below the mean line defined by ambient observations, and little laboratory data extend to the highest O:C ratios commonly observed in remote conditions. OA having both high O:C and high H:C are required to bridge the gaps. Aqueous-phase oxidation may produce such OA, but experiments under realistic ambient conditions are needed to constrain the relative importance of this pathway. ©2015. American Geophysical Union. All Rights Reserved.
URL: https://www.scopus.com/inward/record.uri?eid=2-s2.0-84931571422&doi=10.1002%2f2015GL063693&partnerID=40&md5=993a4ed62c112af3ee1afa8aaee361ec
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被引频次[WOS]:75   [查看WOS记录]     [查看WOS中相关记录]
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/9099
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: Department of Civil and Environmental Engineering, Massachusetts Institute of Technology, Cambridge, MA, United States

Recommended Citation:
Chen Q.,Heald C.L.,Jimenez J.L.,et al. Elemental composition of organic aerosol: The gap between ambient and laboratory measurements[J]. Geophysical Research Letters,2015-01-01,42(10).
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