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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
Source PublicationSCIENTIFIC REPORTS
Volume8Issue:2018Pages:535
SubtypeArticle
AbstractIsoprene 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 HeadingsScience & Technology
DOI10.1038/s41598-017-18983-7
WOS Keyword2013 SOUTHERN OXIDANT ; THERMODYNAMIC-EQUILIBRIUM MODEL ; MASS-SPECTROMETRY ; 2-METHYLGLYCERIC ACID ; COMPOUND EMISSIONS ; RELATIVE-HUMIDITY ; REACTIVE UPTAKE ; UNITED-STATES ; SOA FORMATION ; GROUND SITE
Indexed BySCI
Language英语
WOS Research AreaScience & Technology - Other Topics
WOS SubjectMultidisciplinary Sciences
WOS IDWOS:000419942100018
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Cited Times:5[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.ieecas.cn/handle/361006/5183
Collection粉尘与环境研究室
Affiliation1.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
Recommended Citation
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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