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Title:
Levels and spatial distribution of gaseous polychlorinated biphenyls and polychlorinated naphthalenes in the air over the northern South China Sea
Author: Li, Qilu1,3; Xu, Yue1; Li, Jun1; Pan, Xiaohui2; Liu, Xiang1; Zhang, Gan1
Source: ATMOSPHERIC ENVIRONMENT
ISSN: 1352-2310
Issued Date: 2012-09-01
Volume: 56, Pages:228-235
Keyword: PCBs ; PCNs ; South China Sea ; Atmosphere
Subject: Environmental Sciences; Meteorology & Atmospheric Sciences
Rank: [Li, Qilu; Xu, Yue; Li, Jun; Liu, Xiang; Zhang, Gan] Chinese Acad Sci, State Key Lab Organ Geochem, Guangzhou Inst Geochem, Guangzhou 510640, Guangdong, Peoples R China; [Pan, Xiaohui] Chinese Acad Sci, Yantai Inst Coastal Zone Res, Yantai 264003, Peoples R China; [Li, Qilu] Chinese Acad Sci, Grad Univ, Beijing 100039, Peoples R China
Corresponding Author: Li, J (reprint author), Chinese Acad Sci, State Key Lab Organ Geochem, Guangzhou Inst Geochem, Guangzhou 510640, Guangdong, Peoples R China.,junli@gig.ac.cn
Department: 中科院海岸带环境过程与生态修复重点实验室
Abstract: Monitoring marine persistent organic pollutants (POPs) is important because oceans play a significant role in the cycling of POPs. The South China Sea (SCS) is surrounded by developing countries in Southeast Asia which are centers of e-waste recycling and the ship dismantling industry. In this study, shipboard air samples collected over the SCS between September 6 and 22, 2005 were analyzed for polychlorinated biphenyls (PCBs) and polychlorinated naphthalenes (PCNs). The levels of Sigma(12)PCBs ranged from 32.3 to 167 pg m(-3), with a mean value of 98.4 +/- 36.0 pg m(-3). Tetra-CBs were the predominant congeners. The concentrations of Sigma(18)PCNs ranged from N.D. to 26.0 pg m(-3), with a mean value of 10.5 +/- 7.16 pg m(-3), and tri-CNs were predominant. The gaseous concentrations of PCBs and PCNs over the SCS were consistent with those over other seas and oceans. Compared with previous studies, it was found that the concentrations of PCBs exhibited an obviously declining trend. The measured PCB and PCN concentrations in the atmosphere over the SCS were influenced by their proximity to source regions and air mass origins. The highest gaseous PCB and PCN concentrations were found at sampling sites adjacent to the continental South China. E-waste recycling, ship dismantling and combustion in South China and some Southeast Asian countries might contribute PCBs and PCNs to the atmosphere of the SCS. (C) 2012 Elsevier Ltd. All rights reserved.
English Abstract: Monitoring marine persistent organic pollutants (POPs) is important because oceans play a significant role in the cycling of POPs. The South China Sea (SCS) is surrounded by developing countries in Southeast Asia which are centers of e-waste recycling and the ship dismantling industry. In this study, shipboard air samples collected over the SCS between September 6 and 22, 2005 were analyzed for polychlorinated biphenyls (PCBs) and polychlorinated naphthalenes (PCNs). The levels of Sigma(12)PCBs ranged from 32.3 to 167 pg m(-3), with a mean value of 98.4 +/- 36.0 pg m(-3). Tetra-CBs were the predominant congeners. The concentrations of Sigma(18)PCNs ranged from N.D. to 26.0 pg m(-3), with a mean value of 10.5 +/- 7.16 pg m(-3), and tri-CNs were predominant. The gaseous concentrations of PCBs and PCNs over the SCS were consistent with those over other seas and oceans. Compared with previous studies, it was found that the concentrations of PCBs exhibited an obviously declining trend. The measured PCB and PCN concentrations in the atmosphere over the SCS were influenced by their proximity to source regions and air mass origins. The highest gaseous PCB and PCN concentrations were found at sampling sites adjacent to the continental South China. E-waste recycling, ship dismantling and combustion in South China and some Southeast Asian countries might contribute PCBs and PCNs to the atmosphere of the SCS. (C) 2012 Elsevier Ltd. All rights reserved.
WOS Subject Extended: Environmental Sciences & Ecology ; Meteorology & Atmospheric Sciences
WOS Keyword Plus: POLYBROMINATED DIPHENYL ETHERS ; HISTORICAL EMISSION INVENTORY ; PERSISTENT ORGANIC POLLUTANTS ; ORGANOCHLORINE PESTICIDES ; PCB CONGENERS ; GAS-EXCHANGE ; ARCTIC AIR ; ATLANTIC-OCEAN ; GREAT-LAKES ; BALTIC SEA
DOC Type: Article
Indexed Type: SCI
Language: 英语
WOS ID: WOS:000306347900028
Citation statistics:
Content Type: 期刊论文
URI: http://ir.yic.ac.cn/handle/133337/6009
Appears in Collections:中科院海岸带环境过程与生态修复重点实验室_期刊论文

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description.institution: 1.Chinese Acad Sci, State Key Lab Organ Geochem, Guangzhou Inst Geochem, Guangzhou 510640, Guangdong, Peoples R China
2.Chinese Acad Sci, Yantai Inst Coastal Zone Res, Yantai 264003, Peoples R China
3.Chinese Acad Sci, Grad Univ, Beijing 100039, Peoples R China

Recommended Citation:
Li, Qilu,Xu, Yue,Li, Jun,et al. Levels and spatial distribution of gaseous polychlorinated biphenyls and polychlorinated naphthalenes in the air over the northern South China Sea[J]. ATMOSPHERIC ENVIRONMENT,2012,56:228-235.
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