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	Polycyclic aromatic hydrocarbons (pahs) and their derivatives (alkyl-pahs, oxygenated-pahs, nitrated-pahs and azaarenes) in urban road dusts from xi'an, central china
	Wei, Chong1,2,3,4; Bandowe, Benjamin A. Musa2; Han, Yongming1,3; Cao, Junji1,3,5; Zhan, Changlin1,6; Wilcke, Wolfgang2,7
刊名	Chemosphere
	2015-09-01
卷号	134页码:512-520
关键词	Road dust Polycyclic aromatic compounds Carbon fractions Enrichment factor Cancer risk
ISSN号	0045-6535
DOI	10.1016/j.chemosphere.2014.11.052
通讯作者	Han, yongming(yongming@ieecas.cn)
英文摘要	Urban road dusts are carriers of polycyclic aromatic compounds (pacs) and are therefore considered to be a major source of contamination of other environmental compartments and a source of exposure to pacs for urban populations. we determined the occurrence, composition pattern and sources of several pacs (29 alkyl- and parent-pahs, 15 oxygenated-pahs (opahs), 4 azaarenes (azas), and 11 nitrated-pahs (npahs)) in twenty urban road dusts and six suburban surface soils (0-5 cm) from xi'an, central china. the average concentrations of sigma 29pahs, sigma 4azas, sigma 150pahs, and sigma 11npahs were 15767, 673, 4754, and 885 ng g(-1) in road dusts and 2067, 784, 854, and 118 ng g-1 in surface soils, respectively. the concentrations of most individual pacs were higher in street dusts than suburban soils, particularly for pacs with molecular weight >192 g mol(-1). the enrichment factors of individual pacs were significantly positively correlated with log k-oa and log k-ow, indicating an increasing deposition and co-sorption of the pacs in urban dusts with decreasing volatility and increasing hydrophobicity. significant correlations between the concentrations of individual and sum of pacs, carbon fractions (soot and char), and source-characteristic pacs (combustion-derived pahs and retene, etc.), indicated that pahs, opahs and azas were mostly directly emitted from combustion activities and had similar post-emission fates, but npahs were possibly more intensely photolyzed after deposition as well as being emitted from vehicle exhaust sources. the incremental lifetime cancer risk (ilcr) resulting from exposure to urban dust bound-pacs was higher than 10(-6), indicating a non-negligible cancer risk to residents of xi'an. (c) 2014 elsevier ltd. all rights reserved.
WOS关键词	HEALTH-RISK ASSESSMENT ; AMBIENT AIR ; OXY-PAHS ; SOURCE APPORTIONMENT ; AIRBORNE PARTICULATE ; BLACK CARBON ; NITRO-PAHS ; HONG-KONG ; SOILS ; AREA
WOS研究方向	Environmental Sciences & Ecology
WOS类目	Environmental Sciences
语种	英语
出版者	PERGAMON-ELSEVIER SCIENCE LTD
WOS记录号	WOS:000356549500070
内容类型	期刊论文
URI标识	http://www.corc.org.cn/handle/1471x/2376406
专题	中国科学院大学
通讯作者	Han, Yongming
作者单位	1.Chinese Acad Sci, Inst Earth Environm, KLACP, Xian 710061, Peoples R China 2.Univ Bern, Inst Geog, CH-3012 Bern, Switzerland 3.Chinese Acad Sci, Inst Earth Environm, SKLLQG, Xian 710061, Peoples R China 4.Univ Chinese Acad Sci, Beijing 100049, Peoples R China 5.Xi An Jiao Tong Univ, Inst Global Environm Change, Xian 710049, Peoples R China 6.Hubei Polytech Univ, Environm Sci & Engn Coll, Huangshi 435003, Peoples R China 7.Karlsruhe Inst Technol, Inst Geog & Geoecol, D-76131 Karlsruhe, Germany
推荐引用方式 GB/T 7714	Wei, Chong,Bandowe, Benjamin A. Musa,Han, Yongming,et al. Polycyclic aromatic hydrocarbons (pahs) and their derivatives (alkyl-pahs, oxygenated-pahs, nitrated-pahs and azaarenes) in urban road dusts from xi'an, central china[J]. Chemosphere,2015,134:512-520.
APA	Wei, Chong,Bandowe, Benjamin A. Musa,Han, Yongming,Cao, Junji,Zhan, Changlin,&Wilcke, Wolfgang.(2015).Polycyclic aromatic hydrocarbons (pahs) and their derivatives (alkyl-pahs, oxygenated-pahs, nitrated-pahs and azaarenes) in urban road dusts from xi'an, central china.Chemosphere,134,512-520.
MLA	Wei, Chong,et al."Polycyclic aromatic hydrocarbons (pahs) and their derivatives (alkyl-pahs, oxygenated-pahs, nitrated-pahs and azaarenes) in urban road dusts from xi'an, central china".Chemosphere 134(2015):512-520.

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