农业环境科学学报2012，Vol.31Issue(8)：1512-1518,7.
金华城区土壤中7种指示性多氯联苯(PCBs)的分布特征和来源分析
The Distribution and Source Analysis of the Seven Indicator Polychlorinated Biphenyls(PCBs) in Urban Soils of Jinhua City, China
摘要
Abstract
A total of 20 surface(0-20 cm ) soil samples covering the whole urban areas of Jinhua were collected to analyze the seven indicators of PCB congeners (PCB28, PCB52, PCB101, PCB118, PCB138, PCB153, PCB180). The PCB residues concentration ranging from 0.111 μg·kg‐1 to 2.688 μg·kg‐1(dry weight), determined by a gas chromatography tandem mass spectrometry, was lower than that of the most of the cities around the world. Compared to the other cities in China, the PCB homologue composition and the distribution herein were similar. The results that tri- and tetra-PCBs were the main compositions of detected PCBs indicating the source of residues was #1 PCB which used to be popularly produced and used in the country. However, there were also some evidences of the pollution of #2 PCB or imported PCBs. The median concentrations of PCBs in samples from industry regions were obviously higher that of farmlands and parks. Combined the result of principal component analysis that 12 samples from three different functional regions assemble together suggested that the source of PCBs was the industry regions, and air transport might be the main way to dissipation over the city. It was also observed that the concentrations of PCBs in soil samples from farmlands were higher than that from parks, and it might be result from the difference of plants which could also adsorb the pollutions such as PCBs on the land that the plants on the farmlands will be harvested sometime and left the soil exposed in air, while the vegetation in parks always protect the soil from the direct air pollution.关键词
多氯联苯/金华/城区土壤Key words
polychlorinated biphenyls/ Jinhua/ urban soil分类
资源环境引用本文复制引用
王祥云,邓勋飞,杨洪达,徐浩,章虎,李振,齐沛沛,王新全..金华城区土壤中7种指示性多氯联苯(PCBs)的分布特征和来源分析[J].农业环境科学学报,2012,31(8):1512-1518,7.基金项目
国家自然科学基金(20807038) （20807038）
浙江省农业科学院科技创新能力提升工程项目 （）
