Passive air sampling of polychlorinated biphenyls, organochlorine compounds, and polybrominated diphenyl ethers across Asia
Passive air sampling of polychlorinated biphenyls, organochlorine compounds, and polybrominated diphenyl ethers across Asia
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DOI：
10.1021/es051382h
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发表时间：
2005-11-15
影响因子：
11.4
通讯作者：
Jones, KC
中科院分区：
文献类型：
--
作者：
Jaward, TM;Zhang, G;Jones, KC
亚洲在经济上具有全球重要性，但尽管国际社会根据《斯德哥尔摩公约》努力查明和减少排放，但该区域关于环境中持久性有机污染物水平的数据仍然很少。因此，在亚洲，特别是在中国、日本、韩国和新加坡进行了大规模的被动空气采样调查。2004年9月21日至11月16日期间，在77个地点同时部署了聚氨酯泡沫圆盘，并分析了多氯联苯（PCB）、有机氯化合物（六氯苯（HCB）、二氯二苯三氯乙烷（DDTs）、三氯甲烷）和多溴联苯醚（PBDEs）。该区域当时的气象条件有利于评估大气排放的地方/区域差异，因为季风或沙尘暴造成的大规模平流效应并未出现。假设采样器的平均吸收率为3.5立方米/天，估算的空气浓度范围如下（皮克/立方米）：多氯联苯，5-340;六氯苯，10-460;滴滴涕，0.4-1800;氯丹，1-660;多溴二苯醚，
Asia is of global importance economically, yet data on ambient persistent organic pollutant levels are still sparse for the region, despite international efforts under the Stockholm Convention to identify and reduce emissions. A large-scale passive air sampling survey was therefore conducted in Asia, specifically in China, Japan, South Korea, and Singapore. Polyurethane foam disks were deployed simultaneously at 77 sites, between Sept 21 and Nov 16, 2004, and analyzed for polychlorinated biphenyls (PCBs), organochlorine compounds (hexachlorobenzene (HCB), dichlorodiphenyltrichloroethanes (DDTs), chlordane), and polybrominated diphenyl ethers (PBDEs). The meteorological conditions prevailing in the region at this time facilitated the assessment of local/regional differences in atmospheric emissions, because large-scale advection effects due to monsoons or dust storms did not occur. Air concentrations estimated assuming an average sampler uptake rate of 3.5 m(3)/day ranged as follows (pg m(-3)): PCBs, 5-340; HCB, 10-460; DDTs, 0.4-1800; chlordanes, 1-660; PBDEs,