ORGANOCHLORINE PESTICIDES AND POLYCHLORINATED BIPHENYLS IN THE AIR OF CHANGDAO, CHINA：IMPLICATION OF THE FILTER EFFECT OF FORESTS
The air concentrations of organochlorine pesticides (OCPs) and polychlorinated biphenyls (PCBs) were measured at two clearings and two forests, Changdao from July, 2006 to June, 2008 using XAD-2 resin based passive air samplers. The samplers were deployed for six periods. For hexachlorocyclohexanes (ΣHCHs: 40-643 pg m-3), hexachlorobenzene (251-538 pg m-3) and PCBs (ΣPCBs: 7.7-46 pg m-3), the concentrations were comparable with those of background sites in Tianjin area, a concurrent joint study. However, the air values of dichlorodiphenyltrichloroethane related compounds (ΣDDTs: 82-938 pg m-3) were similar to those of industrial, urban and suburban sites in Tianjin, indicating the influence of DDT-containing antifouling paints used in Changdao. In contrast with the adjacent clearings, the reduced levels of OCPs and PCBs in forests suggested the filter effect of forest. The forest/clearing ratios reduced as a function of logKoa, which indicated that the more lipophilic compounds have more potential to be filtered by forests.
Zheng X Y Chen D Z Liu X D Yang W
State Key Laboratory of Environmental Chemistry and Ecotoxicology,Research Center for Eco-Environmen Nation Research Center of Certified Reference Materials,Beijing,100013,China Chinese Research Academy of Environmental sciences,Beijing,100012,China
国际会议
北京
英文
1-4
2009-08-24（万方平台首次上网日期，不代表论文的发表时间）