globalchange  > 气候减缓与适应
DOI: 10.1002/2014GL061112
论文题名:
Cloud partitioning of isocyanic acid (HNCO) and evidence of secondary source of HNCO in ambient air
作者: Zhao R.; Lee A.K.Y.; Wentzell J.J.B.; McDonald A.M.; Toom-Sauntry D.; Leaitch W.R.; Modini R.L.; Corrigan A.L.; Russell L.M.; Noone K.J.; Schroder J.C.; Bertram A.K.; Hawkins L.N.; Abbatt J.P.D.; Liggio J.
刊名: Geophysical Research Letters
ISSN: 0094-9745
EISSN: 1944-9476
出版年: 2014
卷: 41, 期:19
起始页码: 6962
结束页码: 6969
语种: 英语
英文关键词: acetate CIMS ; cloud scavenging ; counterflow virtual impactor ; field study ; gas-aqueous partitioning ; isocyanic acid
Scopus关键词: Ionization of gases ; Volatile fatty acids ; Acetate CIMS ; Chemical ionization ; Field studies ; Isocyanic acids ; Photochemical sources ; Secondary sources ; Toxic compounds ; Virtual impactors ; Virtual addresses ; ambient air ; cloud microphysics ; dissolution ; ionization ; protein ; smoke ; toxic substance ; California ; California ; La Jolla ; San Diego ; United States
英文摘要: Although isocyanic acid (HNCO) may cause a variety of health issues via protein carbamylation and has been proposed as a key compound in smoke-related health issues, our understanding of the atmospheric sources and fate of this toxic compound is currently incomplete. To address these issues, a field study was conducted at Mount Soledad, La Jolla, CA, to investigate partitioning of HNCO to clouds and fogs using an Acetate Chemical Ionization Mass Spectrometer coupled to a ground-based counterflow virtual impactor. The first field evidence of cloud partitioning of HNCO is presented, demonstrating that HNCO is dissolved in cloudwater more efficiently than expected based on the effective Henry's law solubility. The measurements also indicate evidence for a secondary, photochemical source of HNCO in ambient air at this site. Key PointsThe first field observation of cloud scavenging of isocyanic acid (HNCO)HNCO may be partitioning to clouds more efficiently than expectedA secondary, photochemical source of HNCO is observed ©2014. American Geophysical Union. All Rights Reserved.
URL: https://www.scopus.com/inward/record.uri?eid=2-s2.0-84911451801&doi=10.1002%2f2014GL061112&partnerID=40&md5=fe26c51ad5f2bd40cc02146f07dd80ae
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/7009
Appears in Collections:气候减缓与适应

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作者单位: Department of Chemistry, University of Toronto, Toronto, ON, Canada

Recommended Citation:
Zhao R.,Lee A.K.Y.,Wentzell J.J.B.,et al. Cloud partitioning of isocyanic acid (HNCO) and evidence of secondary source of HNCO in ambient air[J]. Geophysical Research Letters,2014-01-01,41(19).
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