标题：DDTs and HCHs in sediment cores from the Tibetan Plateau作者：Cheng, Hairong; Lin, Tian; Zhang, Gan; Liu, Guoqing; Zhang, Weiling; Qi,Shihua; Jones, Kevin C.; Zhang, Xuewen

来源出版物：CHEMOSPHERE 卷：94页：183-189 DOI：10.1016/j.chemosphere.2013.10.012出版年：JAN 2014

摘要：Sediment cores were collected from five critical regions in the Tibetan Plateau and were analysed for OCPs with the objective of examining the time trends and recycling of DDTs and HCHs in the cryogenic area. A concurrent increase of the DDT and HCH concentrations from the late 1980s in Lake Yamzho Yumco, Nam Co and Star Sea were observed. The increasing levels of DDE/DDTs (>0.4) suggested that DDT in the upper layers of the sediment cores may be recycled/"weathered" DDT. Regarding the acceleration of glacier retreat from the 1980s due to global warming, it is suggested that OCPs formerly trapped either in the snow/glacier or in the frozen soil land recently reclaimed in the processes of glacier retreat may have been flushed into the sedimentary basins. These findings demonstrate the potential impact of global warming on the recycling of POPs in the plateau cryosphere and indicate that the pristine Tibetan Plateau may serve as one of the key probes to the global trend of POPs.

入藏号：WOS:000327685300026

文献类型：Article

语种：English

作者关键词：DDTs, HCHs, Sediment core, Time trend, Climate warming, Tibetan Plateau

扩展关键词：PERSISTENT ORGANIC POLLUTANTS; POLYCYCLIC AROMATIC-HYDROCARBONS; PEARL RIVER DELTA; ORGANOCHLORINE PESTICIDES; CHLORINATED HYDROCARBONS; COASTAL ENVIRONMENT; CENTRAL-HIMALAYAS; MELTING GLACIERS; WESTERN CANADA; LAKE-SEDIMENTS

通讯作者地址：Lin, Tian;Chinese Acad Sci, Inst Geochem, State Key Lab Environm Geochem, Guiyang 550002, Peoples R China.

电子邮件地址：lintian@vip.gyig.ac.cn

地址：

[Cheng, Hairong] Wuhan Univ, Sch Resource & Environm Sci, Dept Environm Engn, Wuhan 430079, Peoples R China.

[Lin, Tian] Chinese Acad Sci, Inst Geochem, State Key Lab Environm Geochem, Guiyang 550002, Peoples R China.

[Lin, Tian;Zhang, Gan; Liu, Guoqing; Zhang, Weiling] Chinese Acad Sci, Guangzhou Inst Geochem, State Key Lab Organ Geochem, Guangzhou 510640, Guangdong, Peoples R China.

[Zhang, Gan; Jones, Kevin C.] Univ Lancaster, Lancaster Environm Ctr, Lancaster LA1 4YQ, England.

[Liu, Guoqing] Shenzhen Univ, Inst Nucl Technol, Shenzhen 518060, Peoples R China.

[Qi, Shihua] China Univ Geosci, Fac Environm Sci, Wuhan 430074, Peoples R China.

[Zhang, Xuewen] Environm Protect Bur, Environm Monitoring Ctr, Xizang 850000, Lhasa, Peoples R China.

研究方向：Environmental Sciences & Ecology

ISSN：0045-6535