Composition and sources of polycyclic aromatic hydrocarbons in cryoconites of the Tibetan Plateau glaciers

doi:10.1016/j.scitotenv.2016.09.159

	Composition and sources of polycyclic aromatic hydrocarbons in cryoconites of the Tibetan Plateau glaciers
	Li, QL (Li, Quanlian)1; Kang, SC (Kang, Shichang)1,2; Wang, NL (Wang, Ninglian)3; Li, Y (Li, Yang)4; Li, XF (Li, Xiaofei)1; Dong, ZW (Dong, Zhiwen)1; Chen, PF (Chen, Pengfei)1; Li, QL
刊名	SCIENCE OF THE TOTAL ENVIRONMENT
	2017
卷号	574 期号:0 页码:991-999
关键词	SOURCE APPORTIONMENT SPATIAL-DISTRIBUTION CHINA DISTRIBUTION WOOD COMBUSTION ORGANIC-MATTER ICE CORE TRANSPORT SOIL QINGHAI PAHS
DOI	10.1016/j.scitotenv.2016.09.159
文献子类	Article
英文摘要	Dark-colored cryoconite can absorb substantial solar radiation, reduce the surface albedo of glaciers, and thus greatly accelerate glacier melting. Organic matters in cryoconites such as polycyclic aromatic hydrocarbons (PAHs) are kind of the light absorbing compositions. In this study, 15 PAHs containing 3-7 rings were identified in 61 cryoconites samples collected from seven glaciers over the Tibetan Plateau (TP). The average concentration of total PAHs in cryoconites samples was in the range of 6.67-3906.66 ng g(-1) dry weight. The highest average total PAH concentration was found in the southeastern TP, followed by the northern TP. The central TP contained the lowest amount of PAHs. Moreover, correlation analysis showed that total organic carbon (TOC) and grain size were only a minor factor for the accumulation of PAHs in cryoconites of the TP. Factor analysis and diagnostic ratios indicated that the PAHs were produced mainly from the incomplete combustion of coal, fossil fuels and bio-masses. The exhaust gas of locomotives also contributed to the accumulation of PAHs in the glaciers. The PAHs in these seven glaciers showed low toxic equivalent quantity (TEQ), and thus had low biological risk. Nevertheless, the pollution of PAHs in the southeastern TP needs to be addressed. (C) 2016 Published by Elsevier B.V.
学科主题	自然地理学
WOS研究方向	Environmental Sciences & Ecology
语种	英语
WOS记录号	WOS:000389090100094
内容类型	期刊论文
源URL	[http://ir.itpcas.ac.cn/handle/131C11/8406]
专题	青藏高原研究所_图书馆
通讯作者	Li, QL
作者单位	1.Chinese Acad Sci, State Key Lab Cryospher Sci, Northwest Inst Ecoenvironm & Resources, Lanzhou 730000, Peoples R China. 2.Chinese Acad Sci, Ctr Excellence Tibetan Plateau Earth Sci, Beijing 100085, Peoples R China. 3.Northwestern Univ, Sch Urban & Environm Sci, Xian 710127, Peoples R China. 4.Chinese Acad Sci, Key Lab Tibetan Environm Changes & Land Surface P, Inst Tibetan Plateau Res, Beijing 100101, Peoples R China.
推荐引用方式 GB/T 7714	Li, QL ,Kang, SC ,Wang, NL ,et al. Composition and sources of polycyclic aromatic hydrocarbons in cryoconites of the Tibetan Plateau glaciers[J]. SCIENCE OF THE TOTAL ENVIRONMENT,2017,574(0):991-999.
APA	Li, QL .,Kang, SC .,Wang, NL .,Li, Y .,Li, XF .,...&Li, QL.(2017).Composition and sources of polycyclic aromatic hydrocarbons in cryoconites of the Tibetan Plateau glaciers.SCIENCE OF THE TOTAL ENVIRONMENT,574(0),991-999.
MLA	Li, QL ,et al."Composition and sources of polycyclic aromatic hydrocarbons in cryoconites of the Tibetan Plateau glaciers".SCIENCE OF THE TOTAL ENVIRONMENT 574.0(2017):991-999.