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Article: Urban soil contamination in Bangkok: concentrations and patterns of polychlorinated biphenyls (PCBs) in topsoils.
- Article from:
- Australian Journal of Soil Research
- Article date:
- March 1, 1999
- Author:
CopyrightCOPYRIGHT 1999 CSIRO Publishing. This material is published under license from the publisher through the Gale Group, Farmington Hills, Michigan. All inquiries regarding rights should be directed to the Gale Group. (Hide copyright information)
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Abstract
Little is known about the polychlorinated biphenyl (PCB) pollution of tropical environments, although part of the contribution to global PCB contamination originates in the tropics. The objective of this study was to compare PCB concentrations and patterns in urban soils of Bangkok with data from the temperate zone to detect indications for possible differences in sources and fate of PCBs.
The sum of congeners 1, 8, 20, 28, 52, 101, 118, 138, 153, 180, 206, and 209 (=[Sigma]12PCBs) ranged from 0.19 to 11.4/ [micro]g/kg, which was lower than values reported for urban soils in the temperate zone. On average, the hexa-chlorinated PCBs 138 (mean of ...