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DOI | 10.5194/acp-18-8137-2018 |
Different roles of water in secondary organic aerosol formation from toluene and isoprene | |
Jia, Long1,2; Xu, YongFu1,2 | |
2018-06-08 | |
发表期刊 | ATMOSPHERIC CHEMISTRY AND PHYSICS |
ISSN | 1680-7316 |
EISSN | 1680-7324 |
出版年 | 2018 |
卷号 | 18期号:11页码:8137-8154 |
文章类型 | Article |
语种 | 英语 |
国家 | Peoples R China |
英文摘要 | Roles of water in the formation of secondary organic aerosol (SOA) from the irradiations of toluene-NO2 and isoprene-NO2 were investigated in a smog chamber. Experimental results show that the yield of SOA from toluene almost doubled as relative humidity increased from 5 to 85 %, whereas the yield of SOA from isoprene under humid conditions decreased by 2.6 times as compared to that under dry conditions. The distinct difference of RH effects on SOA formation from toluene and isoprene is well explained with our experiments and model simulations. The increased SOA from humid toluene-NO2 irradiations is mainly contributed by O-H-containing products such as polyalcohols formed from aqueous reactions. The major chemical components of SOA in isoprene-NO2 irradiations are oligomers formed from the gas phase. SOA formation from isoprene-NO2 irradiations is controlled by stable Criegee intermediates (SCIs) that are greatly influenced by water. As a result, high RH can obstruct the oligomerization reaction of SCIs to form SOA. |
领域 | 地球科学 |
收录类别 | SCI-E |
WOS记录号 | WOS:000434687100005 |
WOS关键词 | VAPOR WALL LOSS ; RESOLUTION MASS-SPECTROMETRY ; RELATIVE-HUMIDITY ; SOA FORMATION ; CRIEGEE INTERMEDIATE ; REACTIVE UPTAKE ; M-XYLENE ; LABORATORY CHAMBERS ; PARTITIONING MODEL ; PARTICLE FORMATION |
WOS类目 | Environmental Sciences ; Meteorology & Atmospheric Sciences |
WOS研究方向 | Environmental Sciences & Ecology ; Meteorology & Atmospheric Sciences |
引用统计 | |
文献类型 | 期刊论文 |
条目标识符 | http://119.78.100.173/C666/handle/2XK7JSWQ/30840 |
专题 | 地球科学 |
作者单位 | 1.Chinese Acad Sci, Inst Atmospher Phys, State Key Lab Atmospher Boundary Layer Phys & Atm, Beijing 100029, Peoples R China; 2.Univ Chinese Acad Sci, Dept Atmospher Chem & Environm Sci, Coll Earth Sci, Beijing 100049, Peoples R China |
推荐引用方式 GB/T 7714 | Jia, Long,Xu, YongFu. Different roles of water in secondary organic aerosol formation from toluene and isoprene[J]. ATMOSPHERIC CHEMISTRY AND PHYSICS,2018,18(11):8137-8154. |
APA | Jia, Long,&Xu, YongFu.(2018).Different roles of water in secondary organic aerosol formation from toluene and isoprene.ATMOSPHERIC CHEMISTRY AND PHYSICS,18(11),8137-8154. |
MLA | Jia, Long,et al."Different roles of water in secondary organic aerosol formation from toluene and isoprene".ATMOSPHERIC CHEMISTRY AND PHYSICS 18.11(2018):8137-8154. |
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