The soil-air exchange of OCPs and PCBs in the Tibetan Plateau: Emphasis on episodic transport of unintentionally produced PCBs
文献类型：期刊论文
| 作者 | Xu, Yue4; Wang, Yan3; Yang, Chenmeng4; Zhao, Shizhen2; Zhang, Haiyan1 |
| 刊名 | SCIENCE OF THE TOTAL ENVIRONMENT
 |
| 出版日期 | 2023 |
| 卷号 | 873页码:162453 |
| 关键词 | LONG-RANGE TRANSPORT PERSISTENT ORGANIC POLLUTANTS ORGANOCHLORINE PESTICIDES POLYCHLORINATED-BIPHENYLS SPATIAL-DISTRIBUTION PCB-11 |
| ISSN号 | 0048-9697 |
| DOI | 10.1016/j.scitotenv.2023.162453 |
| 英文摘要 | Organochlorine pesticides (OCPs) and polychlorinated biphenyls (PCBs) in paired ambient and surface air fugacity samples were measured in the Tibetan Plateau (TP) from 2019 to 2022. The air concentrations of previously intentionally produced chemicals like dichlorodiphenyltrichloroethane (DDT) and hexachlorocyclohexane (HCH) declined. Their soil?air exchange direction ranged from equilibrium to volatilization, suggesting that the TP is acting as a secondary source of most OCPs and PCBs with the pollution alleviation. However, considerably high atmospheric levels of PCB-11, an indicator of unintentionally produced PCBs (UP-PCBs), were recorded in the southern TP. Strong episodic long-range atmospheric transport (LRAT) and deposition of PCB-11 events took place mostly in summer. Those events associated with winds from potential sources and less rainfall interception along the air mass transport routes accounted for a significant fraction of overall atmospheric deposition in the TP. Meanwhile, cryoturbation and plowing are suspected to be important factors contributing to the reemission of PCB-11 from surface soil. The high abundance of PCB-11 and strong deposition/evaporation events highlights potential environmental and health risks of UP-POPs in the TP. ? 2023 |
| WOS研究方向 | Environmental Sciences |
| 语种 | 英语 |
| WOS记录号 | WOS:000949490100001 |
| 源URL | [http://ir.gig.ac.cn/handle/344008/80277]  |
| 专题 | 有机地球化学国家重点实验室 |
| 作者单位 | 1.The Johns Hopkins University-Nanjing University Center for Chinese and American Studies, Nanjing University, Nanjing; 210093, China 2.State Key Laboratory of Organic Geochemistry, Guangzhou Institute of Geochemistry, Chinese Academy of Sciences, Guangzhou; 510640, China 3.Key Laboratory of Industrial Ecology and Environmental Engineering (MOE), School of Environmental Science and Technology, Dalian University of Technology, Dalian; 116024, China 4.State Key Laboratory of Environmental Geochemistry, Institute of Geochemistry, Chinese Academy of Sciences, Guiyang; 550081, China |
| 推荐引用方式 GB/T 7714 | Xu, Yue,Wang, Yan,Yang, Chenmeng,et al. The soil-air exchange of OCPs and PCBs in the Tibetan Plateau: Emphasis on episodic transport of unintentionally produced PCBs[J]. SCIENCE OF THE TOTAL ENVIRONMENT,2023,873:162453. |
| APA | Xu, Yue,Wang, Yan,Yang, Chenmeng,Zhao, Shizhen,&Zhang, Haiyan.(2023).The soil-air exchange of OCPs and PCBs in the Tibetan Plateau: Emphasis on episodic transport of unintentionally produced PCBs.SCIENCE OF THE TOTAL ENVIRONMENT,873,162453. |
| MLA | Xu, Yue,et al."The soil-air exchange of OCPs and PCBs in the Tibetan Plateau: Emphasis on episodic transport of unintentionally produced PCBs".SCIENCE OF THE TOTAL ENVIRONMENT 873(2023):162453. |
入库方式： OAI收割
来源：广州地球化学研究所
浏览0
下载0
收藏0
其他版本
除非特别说明，本系统中所有内容都受版权保护，并保留所有权利。