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Passive air sampling of PCBs, organochlorine compounds and PBDEs across Asia.

Jaward, Foday M. and Zhang, Gan and Nam, Jae Jak and Sweetman, Andrew J. and Obbard, Jeffrey P. and Kobara, Yuso and Jones, Kevin C. (2005) Passive air sampling of PCBs, organochlorine compounds and PBDEs across Asia. Environmental Science & Technology, 39 (22). pp. 8638-8645. ISSN 0013-936X

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Abstract

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 m3/day ranged as follows (pg m-3): PCBs, 5−340; HCB, 10−460; DDTs, 0.4−1800; chlordanes, 1−660; PBDEs, <0.13−340. South Korea and Singapore generally had regionally low concentrations. Elevated concentrations of PCBs, DDTs, and HCB occurred at sites in China, higher than reported in a similar recent sampling campaign in Europe. Chlordane was highest in samples from Japan (which also had elevated levels of PCBs and DDTs) and was also elevated in some Chinese locations. PBDE levels were generally low in the region.

Item Type: Article
Journal or Publication Title: Environmental Science & Technology
Subjects: G Geography. Anthropology. Recreation > GE Environmental Sciences
Departments: Faculty of Science and Technology > Lancaster Environment Centre
ID Code: 21257
Deposited By: ep_ss_importer
Deposited On: 08 Jan 2009 09:17
Refereed?: No
Published?: Published
Last Modified: 26 Jul 2012 15:44
Identification Number:
URI: http://eprints.lancs.ac.uk/id/eprint/21257

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