Developing chemical signatures of particulate air pollution in the Pearl   River Delta region, China

doi:10.1016/S1001-0742(10)60526-8

CORC > 北京大学 > 环境科学与工程学院

	Developing chemical signatures of particulate air pollution in the Pearl River Delta region, China
	Zheng, Mei ; Cheng, Yuan ; Zeng, Limin ; Zhang, Yuanhang
刊名	journal of environmental sciences china
	2011
关键词	PM(2.5) chemical signature local and regional air pollution Hong Kong Pearl River Delta HONG-KONG ORGANIC-COMPOUNDS SHIP EMISSIONS UNITED-STATES TRANSPORT PM2.5 ELEMENTS TRACERS MATTER SITES
DOI	10.1016/S1001-0742(10)60526-8
英文摘要	PM(2.5) samples were collected in a regional sampling network with three sites in Hong Kong and four sites in the adjacent inland Pearl River Delta (PRD) or Guangdong Province during four months/seasons from 2002-2003. Trans-boundary transport between Hong Kong and the inland PRD is inevitable under the influence of Asian monsoon. In summer, Hong Kong serves as the upwind site of the inland PRD while during other seasons it is under the influence of continental emissions. Previous studies have recognized the importance of using chemical signatures to differentiate local vs. regional contributions to air pollutants in Hong Kong such as the CO/NOx ratio, ratios of different VOC species. In this study, detailed chemical speciation by gas chromatography-mass spectrometry was performed with PM(2).(5) samples to identify new chemical signatures to distinguish aerosols in Hong Kong from those from the inland PRD. Since Hong Kong is not influenced by the continental emissions from the inland PRD during summer, comparison focused on chemical data obtained from this season for chemical signatures. The new ratios developed from the current study include LCPI/HCPI ratio of alkanes (0.39 +/- 0.02 in Hong Kong vs. 0.78 +/- 0.08 in the inland PRD), pyrene to benzo[ghi]perylene ratio (0.97 +/- 0.21 in Hong Kong compared to 0.20 +/- 0.06 in the inland PRD), and the ratio of 1,2-benzenedioic acid to 1,4-benzenedioic acid (1.8 +/- 0.1 in Hong Kong vs. 0.6 +/- 0.05 in the inland PRD). Results from this study also revealed that Hong Kong was impacted by ship emissions as reflected by substantially high V/Ni ratio (9 +/- 2) while this ratio was about 1-2 at all sites in the inland PRD, which is very close to typical ratios from residual oil combustion.; http://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcApp=PARTNER_APP&SrcAuth=LinksAMR&KeyUT=WOS:000293201900012&DestLinkType=FullRecord&DestApp=ALL_WOS&UsrCustomerID=8e1609b174ce4e31116a60747a720701 ; Environmental Sciences; SCI(E); EI; PubMed; 中国科技核心期刊(ISTIC); 中国科学引文数据库(CSCD); 6; ARTICLE; 7; 1143-1149; 23
语种	英语
内容类型	期刊论文
源URL	[http://ir.pku.edu.cn/handle/20.500.11897/158860]
专题	环境科学与工程学院
推荐引用方式 GB/T 7714	Zheng, Mei,Cheng, Yuan,Zeng, Limin,et al. Developing chemical signatures of particulate air pollution in the Pearl River Delta region, China[J]. journal of environmental sciences china,2011.
APA	Zheng, Mei,Cheng, Yuan,Zeng, Limin,&Zhang, Yuanhang.(2011).Developing chemical signatures of particulate air pollution in the Pearl River Delta region, China.journal of environmental sciences china.
MLA	Zheng, Mei,et al."Developing chemical signatures of particulate air pollution in the Pearl River Delta region, China".journal of environmental sciences china (2011).