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学科主题: Engineering, Environmental ; Environmental Sciences
题名: Organochlorine Pesticides in the Atmosphere and Surface Water from the Equatorial Indian Ocean: Enantiomeric Signatures, Sources, and Fate
作者: [Huang, Yumei ; Xu, Yue ; Li, Jun ; Zhang, Gan ; Cheng, Zhineng ; Liu, Junwen ; Wang, Yan] Chinese Acad Sci, Guangzhou Inst Geochem, State Key Lab Organ Geochem, Guangzhou 510640, Guangdong, Peoples R China ; [Xu, Weihai] Chinese Acad Sci, South China Sea Inst Oceanol, CAS Key Lab Marginal Sea Geol, Guangzhou 510301, Guangdong, Peoples R China ; [Huang, Yumei ; Cheng, Zhineng ; Liu, Junwen] Chinese Acad Sci, Grad Univ, Beijing 100049, Peoples R China ; [Tian, Chongguo] Chinese Acad Sci, Key Lab Coastal Zone Environm Proc & Ecol Remedia, Yantai Inst Coastal Zone Res, Yantai 264003, Shandong, Peoples R China ; [Tian, Chongguo] Chinese Acad Sci, Yantai Inst Coastal Zone Res, Shandong Prov Key Lab Coastal Zone Environm Proc, Yantai 264003, Shandong, Peoples R China
通讯作者: xuyue@gig.ac.cn
刊名: ENVIRONMENTAL SCIENCE & TECHNOLOGY
发表日期: 2013
卷: 47, 期:23, 页:13395-13403
部门归属: 海洋地质
资助者: This work was supported by the Chinese Academy of Sciences (No. KZCX2-YW-GJ02) and the Natural Science Foundation of China (NSFC) (Nos. 41125014 and 41073080). In addition, the authors would like to thank the National Oceanic and Atmospheric Administration's Air Resources Laboratory for providing the HYSPLIT transport model and the READY Web site (http://www.arl.noaa.gov/ready.html). This is a contribution of GIGCAS-1773.
摘要: Nineteen pairs of gaseous and surface seawater samples were collected along the cruise from Malaysia to the south of Bay of Bengal passing by Sri Lanka between April 12 and May 4, 2011 on the Chinese research vessel Shiyan I to investigate the latest OCP pollution status over the equatorial Indian Ocean. Significant decrease of alpha-HCH and gamma-HCH was found in the air and dissolved water phase owing to global restriction for decades. Substantially high levels of p,p'-DDT, o,p'-DDT, trans-chlordane (TC), and cis-chlordane (CC) were observed in the water samples collected near Sri Lanka, indicating fresh continental riverine input of these compounds. Fugacity fractions suggest equilibrium of alpha-HCH at most sampling sites, while net volatilization for DDT isomers, TC and CC in most cases. Enantiomer fractions (EFs) of alpha-HCH and o,p'-DDT in the air and water samples were determined to trace the source of these compounds in the air. Racemic or close to racemic composition was found for atmospheric alpha-HCH and o,p'-DDT, while significant depletion of (+) enantiomer was found in the water phase, especially for o,p'-DDT (EFs = 0.310 + 0.178). 24% of alpha-HCH in the lower air over the open sea of the equatorial Indian Ocean is estimated to be volatilized from local seawater, indicating that long-range transport is the main source.
语种: 英语
原文出处: 查看原文
WOS记录号: WOS:000327999400026
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内容类型: 期刊论文
URI标识: http://ir.scsio.ac.cn/handle/344004/11091
Appears in Collections:中科院边缘海地质重点实验室_期刊论文

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[Huang, Yumei; Xu, Yue; Li, Jun; Zhang, Gan; Cheng, Zhineng; Liu, Junwen; Wang, Yan] Chinese Acad Sci, Guangzhou Inst Geochem, State Key Lab Organ Geochem, Guangzhou 510640, Guangdong, Peoples R China; [Xu, Weihai] Chinese Acad Sci, South China Sea Inst Oceanol, CAS Key Lab Marginal Sea Geol, Guangzhou 510301, Guangdong, Peoples R China; [Huang, Yumei; Cheng, Zhineng; Liu, Junwen] Chinese Acad Sci, Grad Univ, Beijing 100049, Peoples R China; [Tian, Chongguo] Chinese Acad Sci, Key Lab Coastal Zone Environm Proc & Ecol Remedia, Yantai Inst Coastal Zone Res, Yantai 264003, Shandong, Peoples R China; [Tian, Chongguo] Chinese Acad Sci, Yantai Inst Coastal Zone Res, Shandong Prov Key Lab Coastal Zone Environm Proc, Yantai 264003, Shandong, Peoples R China.Organochlorine Pesticides in the Atmosphere and Surface Water from the Equatorial Indian Ocean: Enantiomeric Signatures, Sources, and Fate,ENVIRONMENTAL SCIENCE & TECHNOLOGY,2013,47(23):13395-13403
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