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Chemical characterization and source apportionment of PM2.5 in Beijing: seasonal perspective
Zhang, R (Zhang, R.)[ 1 ]; Jing, J (Jing, J.)[ 1,2 ]; Tao, J (Tao, J.)[ 3 ]; Hsu, SC (Hsu, S. -C.)[ 4 ]; Wang, G (Wang, G.)[ 5 ]; Cao, J (Cao, J.)[ 5 ]; Lee, CSL (Lee, C. S. L.)[ 6 ]; Zhu, L (Zhu, L.)[ 3 ]; Chen, Z (Chen, Z.)[ 7 ]; Zhao, Y (Zhao, Y.)[ 7 ]; Shen, Z (Shen, Z.)[ 8 ]
2013
发表期刊ATMOSPHERIC CHEMISTRY AND PHYSICS
卷号13期号:14页码:7053-7074
文章类型期刊论文
摘要

PM2.5 samples were collected at six general stations and one roadside station in Hong Kong in two periods of high particulate matter (PM) in 2003 (27 October–4 November and 30 November–13 December). The highest PM2.5 reached 216 μg m−3 during the first high PM period and 113 μg m−3 during the second high PM period. Analysis of synoptic weather conditions identified individual sampling days under dominant influence of one of three types of air masses, that is, local, regional and long‐range transported (LRT) air masses. Roadside samples were discussed separately due to heavy influences from vehicular emissions. This research examines source apportionment of fine organic carbon (OC) and contribution of secondary organic aerosol on high PM days under different synoptic conditions. Six primary OC (POC) sources (vehicle exhaust, biomass burning, cooking, cigarette smoke, vegetative detritus, and coal combustion) were identified on the basis of characteristic organic tracers. Individual POC source contributions were estimated using chemical mass balance model. In the roadside and the local samples, OC was dominated by the primary sources, accounting for more than 74% of OC. In the samples influenced by regional and LRT air masses, secondary OC (SOC), which was approximated to be the difference between the total measured OC and the apportioned POC, contributed more than 54% of fine OC. SOC was highly correlated with water‐ soluble organic carbon and sulfate, consistent with its secondary nature.

关键词Fine Organic Carbon Source Apportionment Chemical Mass Balance Organic Tracers Episode Secondary Organic Aerosol
DOI10.5194/acp-13-7053-2013
收录类别SCI
语种英语
引用统计
文献类型期刊论文
条目标识符http://ir.ieecas.cn/handle/361006/10055
专题粉尘与环境研究室
通讯作者Hsu, SC (Hsu, S. -C.)[ 4 ]
作者单位1.Department of Chemistry, The Hong Kong University of Science and Technology, Clear Water Bay, Hong Kong, China;
2.College of Life and Basic Sciences, Sichuan Agricultural University, Sichuan Province, 625014, China;
3.SKLLQG, Institute of Earth Environment, Chinese Academy of Sciences, Xi'an 710075, China;
4.Environ. Chem. and Technology Program, University of Wisconsin, Madison, WI 53706, USA;
5.Atmospheric Research Center, HKUST Fok Ying Tung Graduate School, Nansha IT Park, Nansha, Guangzhou 511458, China;
6.Environmental Central Facility, The Hong Kong University of Science and Technology, Clear Water Bay, Hong Kong, China;
7.Environment Protection Department of HKSAR Government, 33/F, Revenue Tower, 5 Gloucester Rd., Wanchai, Hong Kong, China
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GB/T 7714
Zhang, R ,Jing, J ,Tao, J ,et al. Chemical characterization and source apportionment of PM2.5 in Beijing: seasonal perspective[J]. ATMOSPHERIC CHEMISTRY AND PHYSICS,2013,13(14):7053-7074.
APA Zhang, R .,Jing, J .,Tao, J .,Hsu, SC .,Wang, G .,...&Shen, Z .(2013).Chemical characterization and source apportionment of PM2.5 in Beijing: seasonal perspective.ATMOSPHERIC CHEMISTRY AND PHYSICS,13(14),7053-7074.
MLA Zhang, R ,et al."Chemical characterization and source apportionment of PM2.5 in Beijing: seasonal perspective".ATMOSPHERIC CHEMISTRY AND PHYSICS 13.14(2013):7053-7074.
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