气候变化领域集成服务门户(CCPortal): Historical trends of organochlorine pesticides (OCPs) recorded in sediments across the Tibetan Plateau

CCPortal

DOI	10.1007/s10653-017-9908-7
	Historical trends of organochlorine pesticides (OCPs) recorded in sediments across the Tibetan Plateau
	Yang, Ruiqiang; Xie, Ting; Yang, Handong; Turner, Simon; Wu, Guangjian
通讯作者	Yang, RQ (通讯作者)
发表日期	2018
ISSN	0269-4042
EISSN	1573-2983
起始页码	303
结束页码	312
卷号	40 期号:1
英文摘要	Sediment cores from four lakes across the Tibetan Plateau were used as natural archives to study the time trends of organochlorine pesticides (OCPs). The total concentrations of dichlorodiphenyltrichloroethane (I DDT) pound and hexachlorocyclohexane isomers (I HCH) pound were in the range of 0.04-1.61 and 0.08-1.88 ng/g based on dry weight (dw), while the input fluxes were in the range of 0.3-236 and 0.7-295 pg/cm(2)/y in the core sediments, respectively. The input fluxes of I DDT pound and I HCH pound generally peaked in sediment layers corresponding to the 1970s-1990s and peaked in top sediment layers. The ratio of alpha/gamma-HCH decreased in the top layer sediments, implying that the contribution of lindane (pure gamma-HCH) has been increasing in recent years. In addition, the ratio of o,p'-DDT/p,p'-DDT increased significantly over the last 15-20 years, suggesting that dicofol (characterized by high ratio of o,p'-DDT/p,p'-DDT about 7.0) has recently become a relatively more important source of DDT compared to technical DDT itself. The time trends of OCPs recorded in lake sediments examined the impact on such remote alpine regions by human activities.
关键词	PERSISTENT ORGANIC POLLUTANTS POLYCYCLIC AROMATIC-HYDROCARBONS LAKE-SEDIMENTS CENTRAL-HIMALAYAS TOXIC-SUBSTANCES CONIFER NEEDLES DDT POLLUTION MT. EVEREST REMOTE LAKE SOILS
英文关键词	Sediment core; Alpine lake; DDT; HCH; Historical trend; Tibetan Plateau
语种	英语
WOS研究方向	Engineering ; Environmental Sciences & Ecology ; Public, Environmental & Occupational Health ; Water Resources
WOS类目	Engineering, Environmental ; Environmental Sciences ; Public, Environmental & Occupational Health ; Water Resources
WOS记录号	WOS:000424199900019
来源期刊	ENVIRONMENTAL GEOCHEMISTRY AND HEALTH
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/259174
推荐引用方式 GB/T 7714	Yang, Ruiqiang,Xie, Ting,Yang, Handong,et al. Historical trends of organochlorine pesticides (OCPs) recorded in sediments across the Tibetan Plateau[J]. 中国科学院青藏高原研究所,2018,40(1).
APA	Yang, Ruiqiang,Xie, Ting,Yang, Handong,Turner, Simon,&Wu, Guangjian.(2018).Historical trends of organochlorine pesticides (OCPs) recorded in sediments across the Tibetan Plateau.ENVIRONMENTAL GEOCHEMISTRY AND HEALTH,40(1).
MLA	Yang, Ruiqiang,et al."Historical trends of organochlorine pesticides (OCPs) recorded in sediments across the Tibetan Plateau".ENVIRONMENTAL GEOCHEMISTRY AND HEALTH 40.1(2018).