Characterization of isoprene-derived secondary organic aerosols at a rural site in North China Plain with implications for anthropogenic pollution effects | |
Li, Jianjun1; Wang, Gehui1,2,3,4; Wu, Can1,4; Cao, Cong1,4; Ren, Yanqin1,4; Wang, Jiayuan1,4; Li, Jin1,4; Cao, Junji1; Zeng, Limin5,6; Zhu, Tong5,6 | |
2018-01-11 | |
发表期刊 | SCIENTIFIC REPORTS |
卷号 | 8期号:2018页码:535 |
文章类型 | Article |
摘要 | Isoprene is the most abundant non-methane volatile organic compound (VOC) and the largest contributor to secondary organic aerosol (SOA) burden on a global scale. In order to examine the influence of high concentrations of anthropogenic pollutants on isoprene-derived SOA (SOA(i)) formation, summertime PM2.5 filter samples were collected with a three-hour sampling interval at a rural site in the North China Plain (NCP), and determined for SOA(i) tracers and other chemical species. RO2+NO pathway derived 2-methylglyceric acid presented a relatively higher contribution to the SOA, due to the high-NOx (similar to 20 ppb) conditions in the NCP that suppressed the reactive uptake of RO2+HO2 reaction derived isoprene epoxydiols. Compared to particle acidity and water content, sulfate plays a dominant role in the heterogeneous formation process of SOA(i). Diurnal variation and correlation of 2-methyltetrols with ozone suggested an important effect of isoprene ozonolysis on SOA(i) formation. SOA(i) increased linearly with levoglucosan during June 10-18, which can be attributed to an increasing emission of isoprene caused by the field burning of wheat straw and a favorable aqueous SOA formation during the aging process of the biomass burning plume. Our results suggested that isoprene oxidation is highly influenced by intensive anthropogenic activities in the NCP. |
WOS标题词 | Science & Technology |
DOI | 10.1038/s41598-017-18983-7 |
关键词[WOS] | 2013 SOUTHERN OXIDANT ; THERMODYNAMIC-EQUILIBRIUM MODEL ; MASS-SPECTROMETRY ; 2-METHYLGLYCERIC ACID ; COMPOUND EMISSIONS ; RELATIVE-HUMIDITY ; REACTIVE UPTAKE ; UNITED-STATES ; SOA FORMATION ; GROUND SITE |
收录类别 | SCI |
语种 | 英语 |
WOS研究方向 | Science & Technology - Other Topics |
WOS类目 | Multidisciplinary Sciences |
WOS记录号 | WOS:000419942100018 |
引用统计 | |
文献类型 | 期刊论文 |
条目标识符 | http://ir.ieecas.cn/handle/361006/5183 |
专题 | 粉尘与环境研究室 |
作者单位 | 1.Chinese Acad Sci, Inst Earth Environm, State Key Lab Loess & Quaternary Geol, Key Lab Aerosol Chem & Phys, Xian, Shaanxi, Peoples R China 2.East China Normal Univ, Sch Geog Sci, Minist Educ, Key Lab Geosci Informat, Shanghai, Peoples R China 3.Chinese Acad Sci, Ctr Excellence Reg Atmospher Environm, Inst Urban Environm, Xiamen, Peoples R China 4.Univ Chinese Acad Sci, Beijing, Peoples R China 5.Peking Univ, Coll Environm Sci & Engn, BIC ESAT, Beijing, Peoples R China 6.Peking Univ, Coll Environm Sci & Engn, SKL ESPC, Beijing, Peoples R China |
推荐引用方式 GB/T 7714 | Li, Jianjun,Wang, Gehui,Wu, Can,et al. Characterization of isoprene-derived secondary organic aerosols at a rural site in North China Plain with implications for anthropogenic pollution effects[J]. SCIENTIFIC REPORTS,2018,8(2018):535. |
APA | Li, Jianjun.,Wang, Gehui.,Wu, Can.,Cao, Cong.,Ren, Yanqin.,...&Zhu, Tong.(2018).Characterization of isoprene-derived secondary organic aerosols at a rural site in North China Plain with implications for anthropogenic pollution effects.SCIENTIFIC REPORTS,8(2018),535. |
MLA | Li, Jianjun,et al."Characterization of isoprene-derived secondary organic aerosols at a rural site in North China Plain with implications for anthropogenic pollution effects".SCIENTIFIC REPORTS 8.2018(2018):535. |
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