Spatial distribution of polychlorinated biphenyls, organochlorine pesticides, and dechlorane plus in Northeast Asia

被引:36
作者
Baek, Song-Yee [1 ]
Jurng, Jongsoo [2 ]
Chang, Yoon-Seok [1 ,2 ]
机构
[1] Pohang Univ Sci & Technol POSTECH, Sch Environm Sci & Engn, Pohang 790784, South Korea
[2] Korea Inst Sci & Technol, Div Environm Welf Res, Seoul, South Korea
基金
新加坡国家研究基金会;
关键词
Persistent organic pollutants; Polychlorinated biphenyls; Organochlorine pesticides; Dechlorane plus; Passive air sampling; Northeast Asia; Long-range transport; PCB-11; PERSISTENT ORGANIC POLLUTANTS; AIR; ENDOSULFAN; ISOMERS; CHINA; PCBS;
D O I
10.1016/j.atmosenv.2012.09.015
中图分类号
X [环境科学、安全科学];
学科分类号
08 ; 0830 ;
摘要
XAD-2 resin-based passive air samplers (PAS) were deployed for one year at eight cities in Mongolia, China, and South Korea to investigate the spatial distribution of polychlorinated biphenyls (PCBs), organochlorine pesticides (OCPs), and dechlorane plus (DP). PCB levels were highly correlated with population size and density in China and South Korea. In Mongolia, PCB levels were relatively high considering the low population. In the cases of OCPs and DP, a country-specific distribution was observed. The highest levels of HCHs (hexachlorocyclohexane isomers) and DDTs (dichlorodiphenyl trichloroethane isomers) were detected at sites in China, whereas the highest endosulfan and DP levels were measured at South Korean sites. These results strongly reflected the patterns of use of these chemicals. Mirex, an insecticide never registered in Mongolia and South Korea, was detected at all sampling sites; this is likely to have resulted from long-range transport. Nevertheless, OCPs were generally low in Mongolia. This study confirms that PAS results reflect well the past and current usage of POPs in Northeast Asia. (C) 2012 Elsevier Ltd. All rights reserved.
引用
收藏
页码:40 / 46
页数:7
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