气候变化领域集成服务门户(CCPortal): The recent deposition of persistent organic pollutants and mercury to the Dasuopu glacier, Mt. Xixiabangma, central Himalayas

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DOI	10.1016/j.scitotenv.2008.01.016
	The recent deposition of persistent organic pollutants and mercury to the Dasuopu glacier, Mt. Xixiabangma, central Himalayas
	Wang, Xiao-ping; Yao, Tan-dong; Wang, Peng-ling; Wei-Yang; Tian, Li-De
发表日期	2008
ISSN	0048-9697
EISSN	1879-1026
起始页码	134
结束页码	143
卷号	394 期号:1 页码:134-143
英文摘要	High mountains may serve as condensers for persistent organic pollutants (PoPs) and the ice/snow core can provide long-term records of atmospheric deposition of pollutants. In this study, organochlorine pesticides (OCPs) and polycyclic aromatic hydrocarbons (PAHs) in firn core from Dasuopu Glacier were analyzed and the seasonal variation and deposition flux of these pollutants were investigated. PCB 28 was always detected in samples from different firn core layers and concentrations of PCB 28 were in the range of 0.09-0.3 ng/l. Hexachlorobenzene (HCB) and total DDTs (p-p'-DDD and p-p'-DDT) were not always detected and were only present in some samples. No p-p'-DDE and hexachlorocyclohexane (HCH) were detected above the level of determination limits. Concentrations of HCB ranged from 0.04 to 0.07 ng/l, and total DDTs were in the range of 0.15-0.3 ng/l. Total glacier PAHs was below 26 ng/l. The levels of OCPs and PAHs in Dasuopu glacier were roughly similar to values from the European mountain areas but lower than those from Lys glacier (Italy) and glacier from Rocky Mountain. Hg concentration (2-35 ng/l) in firn core samples was higher than that of remote region of Arctic. PCB 28 didn't show obvious variation in different seasons, however for major PAH compounds higher values were observed in summer than in winter. With regard to Hg, it displayed winter maximum. Deposition flux of OCPs, PAHs and mercury showed similar results with maximum flux occurring in the 2000s. After 2000/2001, deposition flux decreased and reflected the possible decrease of emissions of these atmospheric pollutants in the adjacent region. (c) 2008 Elsevier B.V. All rights reserved.
关键词	POLYCYCLIC AROMATIC-HYDROCARBONS SOLID-PHASE MICROEXTRACTION ORGANOCHLORINE PESTICIDES POLYCHLORINATED-BIPHENYLS CHEMICAL-COMPOSITION SEASONAL-CHANGES NORTHERN SLOPE ICE CORE SNOW AIR
英文关键词	persistent organic pollutants; mercury; firn core; Himalayas
语种	英语
WOS研究方向	Environmental Sciences & Ecology
WOS类目	Environmental Sciences
WOS记录号	WOS:000255104300013
来源期刊	SCIENCE OF THE TOTAL ENVIRONMENT
来源机构	中国科学院青藏高原研究所
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/407
推荐引用方式 GB/T 7714	Wang, Xiao-ping,Yao, Tan-dong,Wang, Peng-ling,et al. The recent deposition of persistent organic pollutants and mercury to the Dasuopu glacier, Mt. Xixiabangma, central Himalayas[J]. 中国科学院青藏高原研究所,2008,394(1):134-143.
APA	Wang, Xiao-ping,Yao, Tan-dong,Wang, Peng-ling,Wei-Yang,&Tian, Li-De.(2008).The recent deposition of persistent organic pollutants and mercury to the Dasuopu glacier, Mt. Xixiabangma, central Himalayas.SCIENCE OF THE TOTAL ENVIRONMENT,394(1),134-143.
MLA	Wang, Xiao-ping,et al."The recent deposition of persistent organic pollutants and mercury to the Dasuopu glacier, Mt. Xixiabangma, central Himalayas".SCIENCE OF THE TOTAL ENVIRONMENT 394.1(2008):134-143.