中国科学院机构知识库网格
Chinese Academy of Sciences Institutional Repositories Grid
Primary emissions versus secondary formation of fine particulate matter in the most polluted city (Shijiazhuang) in North China

文献类型:期刊论文

作者Worsnop, DR (Worsnop, Douglas R.)2; Li, YJ (Li, Yongjie)4; Gu, YF (Gu, Yifang)1,7; Yan, J (Yan, Jin)1,7; Xu, W (Xu, Wei)1,6,7,8; Frohlich, R (Frohlich, Roman)3; Canonaco, F (Canonaco, Francesco)3; Bozzetti, C (Bozzetti, Carlo)3; Ovadnevaite, J (Ovadnevaite, Jurgita)6,8; Ceburnis, D (Ceburnis, Darius)6,8
刊名ATMOSPHERIC CHEMISTRY AND PHYSICS
出版日期2019-02-21
卷号19期号:4页码:2283-2298
产权排序1
英文摘要Particulate matter (PM) pollution is a severe environmental problem in the Beijing-Tianjin-Hebei (BTH) region in North China. PM studies have been conducted extensively in Beijing, but the chemical composition, sources, and atmospheric processes of PM are still relatively less known in nearby Tianjin and Hebei. In this study, fine PM in urban Shijiazhuang (the capital of Hebei Province) was characterized using an Aerodyne quadrupole aerosol chemical speciation monitor (Q-ACSM) from 11 January to 18 February in 2014. The average mass concentration of non-refractory submicron PM (diameter < 1 mu m, NR-PM1) was 178 +/- 101 mu g m(-3), and it was composed of 50% organic aerosol (OA), 21% sulfate, 12% nitrate, 11% ammonium, and 6% chloride. Using the multilinear engine (ME-2) receptor model, five OA sources were identified and quantified, including hydrocarbon-like OA from vehicle emissions (HOA, 13 %), cooking OA (COA, 16 %), biomass burning OA (BBOA, 17 %), coal combustion OA (CCOA, 27 %), and oxygenated OA (OOA, 27 %). We found that secondary formation contributed substantially to PM in episodic events, whereas primary emissions were dominant (most significant) on average. The episodic events with the highest NR-PM1 mass range of 300-360 mu g m(-3) were comprised of 55% of secondary species. On the contrary, a campaign-average low OOA fraction (27 %) in OA indicated the importance of primary emissions, and a low sulfur oxidation degree (F-SO4) of 0.18 even at RH > 90% hinted at insufficient oxidation. These results suggested that in Shijiazhuang in wintertime fine PM was mostly from primary emissions without sufficient atmospheric aging, indicating opportunities for air quality improvement by mitigating direct emissions. In addition, secondary inorganic and organic (OOA) species dominated in pollution events with high-RH conditions, most likely due to enhanced aqueous-phase chemistry, whereas primary organic aerosol (POA) dominated in pollution events with low-RH and stagnant conditions. These results also highlighted the importance of meteorological conditions for PM pollution in this highly polluted city in North China.
语种英语
源URL[http://ir.ieecas.cn/handle/361006/10950]  
专题地球环境研究所_粉尘与环境研究室
通讯作者Huang, RJ (Huang, Ru-Jin)
作者单位1.Chinese Acad Sci, CAS Ctr Excellence Quaternary Sci & Global Change, Xian 710061, Shaanxi, Peoples R China;
2.Aerodyne Res Inc, Billerica, MA USA
3.Paul Scherrer Inst, Lab Atmospher Chem, CH-5232 Villigen, Switzerland;
4.Univ Macau, Fac Sci & Technol, Dept Civil & Environm Engn, Taipa, Macau, Peoples R China;
5.Peking Univ, Coll Environm Sci & Engn, State Key Joint Lab Environm Simulat & Pollut Con, Beijing 100871, Peoples R China;
6.Natl Univ Ireland Galway, Ctr Climate & Air Pollut Studies, Galway, Ireland;
7.Chinese Acad Sci, Inst Earth Environm, Key Lab Aerosol Chem & Phys, State Key Lab Loess & Quaternary Geol, Xian 710061, Shaanxi, Peoples R China;
8.Natl Univ Ireland Galway, Sch Phys, Galway, Ireland;
推荐引用方式
GB/T 7714
Worsnop, DR ,Li, YJ ,Gu, YF ,et al. Primary emissions versus secondary formation of fine particulate matter in the most polluted city (Shijiazhuang) in North China[J]. ATMOSPHERIC CHEMISTRY AND PHYSICS,2019,19(4):2283-2298.
APA Worsnop, DR .,Li, YJ .,Gu, YF .,Yan, J .,Xu, W .,...&Duan, J .(2019).Primary emissions versus secondary formation of fine particulate matter in the most polluted city (Shijiazhuang) in North China.ATMOSPHERIC CHEMISTRY AND PHYSICS,19(4),2283-2298.
MLA Worsnop, DR ,et al."Primary emissions versus secondary formation of fine particulate matter in the most polluted city (Shijiazhuang) in North China".ATMOSPHERIC CHEMISTRY AND PHYSICS 19.4(2019):2283-2298.

入库方式: OAI收割

来源:地球环境研究所

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