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学科主题: 地理学::自然地理学
题名: Sources and environmental processes of polycyclic aromatic hydrocarbons and mercury along a southern slope of the Central Himalayas, Nepal
作者: Pokhrel, B (Pokhrel, Balram)1, 2; Gong, P (Gong, Ping)1, 3; Wang, XP (Wang, Xiaoping)1, 3; Gao, SP (Gao, Shaopeng)1; Wang, CF (Wang, Chuanfei)1; Yao, TD (Yao, Tandong)1, 3
通讯作者: Wang, XP
刊名: ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
发表日期: 2016
DOI: 10.1007/s11356-016-6443-5
卷: 23, 期:14, 页:13843-13852
收录类别: SCI
合作性质: 国际
文章类型: Article
英文摘要: Semi-volatile pollutants can undergo long-range atmospheric transport from low-altitude source regions to high-altitude regions and then accumulate in surface matrices (soil and plants). The Himalayas is the highest mountain range worldwide, but there have been limited studies on the source, transport, and deposition of polycyclic aromatic hydrocarbons (PAHs) and mercury (Hg) in the region. In this study, atmospheric PAHs, and the PAHs and Hg in soil and foliage were determined along a transect on a southern slope of the Himalayas, Nepal. The study showed anthropogenic emissions of PAHs and Hg occurred in the lowland areas of Nepal, and upslope transport to the high-altitude regions happened for both pollutants. During the upslope transport, forest filter effect and snow scavenging may be the important factors that enhance the deposition of PAHs, contributing to the negative pattern between concentrations of PAHs and altitudes. On the contrary, more Hg accumulated in the high Himalayas, relating to the enhanced deposition in the high altitude caused by the higher input from upper atmosphere.
语种: 英语
WOS记录号: WOS:000379553500023
Citation statistics:
内容类型: 期刊论文
URI标识: http://ir.itpcas.ac.cn/handle/131C11/7666
Appears in Collections:图书馆_期刊论文

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作者单位: 1.Chinese Acad Sci, Inst Tibetan Plateau Res, Key Lab Tibetan Environm Changes & Land Surface P, Beijing 100101, Peoples R China
2.Kathmandu Univ, Sch Sci, Dhulikhel, Nepal
3.CAS Ctr Excellence Tibetan Plateau Earth Sci, Beijing 100101, Peoples R China

Recommended Citation:
Pokhrel, B ,Gong, P ,Wang, XP ,et al. Sources and environmental processes of polycyclic aromatic hydrocarbons and mercury along a southern slope of the Central Himalayas, Nepal[J]. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH,2016,23(14):13843-13852.
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