| DOI: | 10.1002/2014GL061040
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| 论文题名: | Cloud forming potential of oligomers relevant to secondary organic aerosols |
| 作者: | Xu W.; Guo S.; Gomez-Hernandez M.; Zamora M.L.; Secrest J.; Marrero-Ortiz W.; Zhang A.L.; Collins D.R.; Zhang R.
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| 刊名: | Geophysical Research Letters
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| ISSN: | 0094-9796
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| EISSN: | 1944-9527
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| 出版年: | 2014
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| 卷: | 41, 期:18 | | 起始页码: | 6538
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| 结束页码: | 6545
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| 语种: | 英语
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| 英文关键词: | CCN
; oligomer
; polymer
; SOA
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| Scopus关键词: | Aerosols
; Mixtures
; Polymers
; Sulfuric acid
; Calculated values
; CCN
; Cloud condensation nuclei
; Hygroscopic growth factor
; Oxidation process
; Particle hygroscopicity
; Secondary organic aerosols
; SOA
; Oligomers
; aerosol
; cloud condensation nucleus
; hygroscopicity
; inorganic acid
; oxidation
; polymer
; polymerization
; relative humidity
; sucrose
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| 英文摘要: | The hygroscopic growth factor (HGF) and cloud condensation nuclei (CCN) activity are measured for surrogates that mimic atmospherically relevant oligomers, including glyoxal trimer dihydrate, methyl glyoxal trimer dihydrate, sucrose, methyl glyoxal mixtures with sulfuric acid and glycolic acid, and 2,4-hexandienal mixtures with sulfuric acid and glycolic acid. For the single-component aerosols, the measured HGF ranges from 1.3 to 1.4 at a relative humidity of 90%, and the hygroscopicity parameter (κ) is in the range of 0.06 to 0.19 on the basis of the measured CCN activity and 0.13 to 0.22 on the basis of the measured HGF, compared to the calculated values of 0.08 to 0.16. Large differences exist in the κ values derived using the measured HGF and CCN data for the multi-component aerosols. Our results reveal that, in contrast to the oxidation process, oligomerization decreases particle hygroscopicity and CCN activity and provides guidance for analyzing the organic species in ambient aerosols. Key Points First measurements of cloud-forming potential for key polymers/oligomersPolymerization/oligomerization decreases hygroscopicity and CCN activityProvide guidance for analyzing ambient organic aerosols ©2014. American Geophysical Union. All Rights Reserved. |
| URL: | https://www.scopus.com/inward/record.uri?eid=2-s2.0-84911215287&doi=10.1002%2f2014GL061040&partnerID=40&md5=211e2d3cebbe591bf73e9b2ff0092da5
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| Citation statistics: |
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| 资源类型: | 期刊论文
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| 标识符: | http://119.78.100.158/handle/2HF3EXSE/7060
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| Appears in Collections: | 气候减缓与适应
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作者单位: | Department of Chemistry, Texas AandM University, College Station, TX, United States
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| Recommended Citation: | |
Xu W.,Guo S.,Gomez-Hernandez M.,et al. Cloud forming potential of oligomers relevant to secondary organic aerosols[J]. Geophysical Research Letters,2014-01-01,41(18).
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