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学科主题: 地理学::自然地理学
题名: Composition and sources of polycyclic aromatic hydrocarbons in cryoconites of the Tibetan Plateau glaciers
作者: 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
通讯作者: Li, QL
关键词: SOURCE APPORTIONMENT ; SPATIAL-DISTRIBUTION ; CHINA DISTRIBUTION ; WOOD COMBUSTION ; ORGANIC-MATTER ; ICE CORE ; TRANSPORT ; SOIL ; QINGHAI ; PAHS
刊名: SCIENCE OF THE TOTAL ENVIRONMENT
发表日期: 2017
DOI: 10.1016/j.scitotenv.2016.09.159
卷: 574, 期:0, 页:991-999
收录类别: SCI
合作性质: 国内
文章类型: Article
类目[WOS]: Environmental Sciences ; Environmental Sciences & Ecology
研究领域[WOS]: Environmental Sciences & Ecology
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.
语种: 英语
WOS记录号: WOS:000389090100094
Citation statistics:
内容类型: 期刊论文
URI标识: http://ir.itpcas.ac.cn/handle/131C11/8406
Appears in Collections:图书馆_期刊论文

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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.

Recommended Citation:
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.
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