文献类型：期刊文献

英文题名：Multifunctional Products of Isoprene Oxidation in Polluted Atmosphere and Their Contribution to SOA

作者：Xu, Z. N.[1,2,3];Nie, W.[1,2];Liu, Y. L.[1,2];Sun, P.[1];Huang, D. D.[4];Yan, C.[5];Krechmer, J.[6];Ye, P. L.[6];Xu, Z.[1,2];Qi, X. M.[1,2];Zhu, C. J.[1,2];Li, Y. Y.[1,2];Wang, T. Y.[1,2];Wang, L.[1,2];Huang, X.[1,2];Tang, R. Z.[7];Guo, S.[7];Xiu, G. L.[8];Fu, Q. Y.[9];Worsnop, D.[6];Chi, X. G.[1,2];Ding, A. J.[1,2]

机构：[1]Nanjing Univ, Sch Atmospher Sci, Joint Int Res Lab Atmospher & Earth Syst Sci, Nanjing, Peoples R China;[2]Jiangsu Prov Collaborat Innovat Ctr Climate Chang, Nanjing, Peoples R China;[3]Zhejiang Univ, Coll Environm & Resource Sci, Hangzhou, Zhejiang, Peoples R China;[4]Shanghai Acad Environm Sci, Shanghai, Peoples R China;[5]Univ Helsinki, Div Atmospher Sci, Dept Phys, Helsinki, Finland;[6]Aerodyne Res Inc, Ctr Aerosol & Cloud Chem, Billerica, MA 01821 USA;[7]Peking Univ, Sch Environm Sci & Technol, Beijing, Peoples R China;[8]East China Univ Sci & Technol, Sch Resources & Environm Engn, State Environm Protect Key Lab Environm Risk Asse, Shanghai, Peoples R China;[9]Shanghai Environm Monitoring Ctr, Shanghai, Peoples R China

年份：2021

卷号：48

期号：1

外文期刊名：GEOPHYSICAL RESEARCH LETTERS

收录：;EI(收录号：20210509859353);WOS:【SCI-EXPANDED(收录号:WOS:000612943500055)】；

基金：The research was supported by National Key Research & Development Program of China (2016YFC0200500 and 2016YFC0202000) and National Science Foundation of China (41675145, 41725020, 91544231, 91644218, 41422504, 91744311, 41875175 and 42005086). The authors thank Dr. Zhou Lei and Mr. Yan Lei from School of Resources and Environmental Engineering, East China University of Science and Technology for their help with the campaign.

语种：英文

外文关键词：functionalized isoprene oxidation products; isoprene; SOA

摘要：Isoprene (2-methyl-1, 3-butadiene) is a nonmethane volatile organic compound (VOC) with the largest global emission and high reactivity. The oxidation of isoprene is crucial to atmospheric photochemistry and contributes significantly to the global formation of secondary organic aerosol. Here, we conducted comprehensive observations in polluted megacities of Nanjing and Shanghai during summer of 2018. We identified multiple functionalized isoprene oxidation products, of which 72% and 88% of the total mole concentration were nitrogen-containing species with the dominant compound being C5 dihydroxyl dinitrate (C5H10N2O8). We calculated the volatility using the group-contribution method and estimated the particle-phase concentration by equilibrium gas/particle partitioning. The results showed that the multifunctional products derived from isoprene oxidation can contribute to 2.6% of the total organic aerosol mass (0.28 +/- 0.27 mu g/m(3)), highlighting the potential importance of isoprene oxidation in polluted regions.