| High-resolution sedimentary records of some organochlorine pesticides in Yamzho Yumco Lake of the Tibetan Plateau: Concentration and composition | |
Sun, Yong; Yuan, Guo-Li; Li, Jun; Tang, Jianhui ; Wang, Gen-Hou
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| 发表期刊 | SCIENCE OF THE TOTAL ENVIRONMENT
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| ISSN | 0048-9697 |
| 2018-02-15 | |
| 卷号 | 615页码:469-475 |
| 关键词 | Organochlorine pesticides Sediment cores High-resolution dating Glacial melting Global warming |
| 研究领域 | Environmental Sciences |
| DOI | 10.1016/j.scitotenv.2017.09.282 |
| 产权排序 | [Sun, Yong; Yuan, Guo-Li] China Univ Geosci, State Key Lab Biogeol & Environm Geol, Beijing 100083, Peoples R China; [Sun, Yong; Yuan, Guo-Li; Li, Jun; Wang, Gen-Hou] China Univ Geosci, Sch Earth Sci & Resources, Beijing 100083, Peoples R China; [Tang, Jianhui] Chinese Acad Sci, Yantai Inst Coastal Zone Res, Key Lab Coastal Environm Proc & Ecol Remediat, Yantai 264003, Peoples R China |
| 作者部门 | 海岸带环境过程实验室 |
| 英文摘要 | Sediment cores from lakes have been used to reconstruct the historic deposition of persistent organic pollutants (POPs), especially in remote alpine areas. To reconstruct the deposition history of organochlorine pesticides (OCPs) in the Tibetan Plateau (TP), two sediment cores from Yamzho Yumco Lake were drilled and dated with high-resolution, from which 23 OCPs were analyzed in greater detail. Regarding several legacy compounds, concentration peaks in the cores were observed in the 1970s, corresponding to the heavy usage of these compounds around the world. In addition, another peak was found at the end of the 1990s, which was explained as the addition of OCPs released from melting glaciers or the cryosphere due to global warming. Furthermore, it was found that the transformation or degradation of OCPs after deposition in the lake was limited by comparing the values of isomeric ratios at different times, such as (DDD+DDE)Sigma DDTs, o,p'-DDT/p,p'-DDT and beta-HCH/Sigma HCHs. Such results ensure that the detected OCPs in the lake sediments really reflect their characteristics at the time of deposition. On the other hand, weak environmental self-purification of the OCPs made them last longer in the TP than in other regions. Reasonably, the fragile ecological environment of the TP would be threatened not only by legacy POPs that remain in the sediments and soils but also by POPs released from melting glaciers or the cryosphere in the next few decades under the influence of global warming. Our research provides an insight into the influence of global warming and glacial melting on the environment of the TP, and further work to gain a better understanding of the environmental processes of POPs in the TP is ongoing. (C) 2017 Elsevier B.V. All rights reserved. |
| 文章类型 | Article |
| 资助机构 | Fundamental Research Funds for the Central Universities [2652016073, 2652016074, 2652017239, 2652017240] ; Innovation Group of Environmental Geochemistry [512039861-B1] ; State Key Laboratory of Biogeology and Environmental Geology [GBL2135, GBL21405] |
| 收录类别 | SCI |
| 语种 | 英语 |
| 关键词[WOS] | PERSISTENT ORGANIC POLLUTANTS ; POLYCYCLIC AROMATIC-HYDROCARBONS ; LONG-RANGE TRANSPORT ; ATMOSPHERIC TRANSPORT ; CHANGING SOURCES ; CLIMATE-CHANGE ; POLAR-REGIONS ; DDT POLLUTION ; SURFACE SOIL ; MT. EVEREST |
| 研究领域[WOS] | Environmental Sciences & Ecology |
| WOS记录号 | WOS:000414922600051 |
| 引用统计 | |
| 文献类型 | 期刊论文 |
| 条目标识符 | http://ir.yic.ac.cn/handle/133337/24394 |
| 专题 | 中国科学院海岸带环境过程与生态修复重点实验室_海岸带环境过程实验室 中国科学院海岸带环境过程与生态修复重点实验室 |
| 作者单位 | 1.China Univ Geosci, State Key Lab Biogeol & Environm Geol, Beijing 100083, Peoples R China; 2.China Univ Geosci, Sch Earth Sci & Resources, Beijing 100083, Peoples R China; 3.Chinese Acad Sci, Yantai Inst Coastal Zone Res, Key Lab Coastal Environm Proc & Ecol Remediat, Yantai 264003, Peoples R China |
| 推荐引用方式 GB/T 7714 | Sun, Yong,Yuan, Guo-Li,Li, Jun,et al. High-resolution sedimentary records of some organochlorine pesticides in Yamzho Yumco Lake of the Tibetan Plateau: Concentration and composition[J]. SCIENCE OF THE TOTAL ENVIRONMENT,2018,615:469-475. |
| APA | Sun, Yong,Yuan, Guo-Li,Li, Jun,Tang, Jianhui,&Wang, Gen-Hou.(2018).High-resolution sedimentary records of some organochlorine pesticides in Yamzho Yumco Lake of the Tibetan Plateau: Concentration and composition.SCIENCE OF THE TOTAL ENVIRONMENT,615,469-475. |
| MLA | Sun, Yong,et al."High-resolution sedimentary records of some organochlorine pesticides in Yamzho Yumco Lake of the Tibetan Plateau: Concentration and composition".SCIENCE OF THE TOTAL ENVIRONMENT 615(2018):469-475. |
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