Historical trends of organochlorine pesticides (OCPs) recorded in sediments across the Tibetan Plateau
文献类型：期刊论文
| 作者 | Yang, Ruiqiang; Xie, Ting; Yang, Handong; Turner, Simon; Wu, Guangjian |
| 刊名 | ENVIRONMENTAL GEOCHEMISTRY AND HEALTH
 |
| 出版日期 | 2018-02-01 |
| 卷号 | 40期号:1页码:303-312 |
| 关键词 | Sediment core Alpine lake DDT HCH Historical trend Tibetan Plateau |
| ISSN号 | 0269-4042 |
| 文献子类 | Article |
| 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. |
| 源URL | [http://ir.rcees.ac.cn/handle/311016/40955]  |
| 专题 | 生态环境研究中心_环境化学与生态毒理学国家重点实验室 |
| 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]. ENVIRONMENTAL GEOCHEMISTRY AND HEALTH,2018,40(1):303-312. |
| 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),303-312. |
| 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):303-312. |
入库方式： OAI收割
来源：生态环境研究中心
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