Spatial Distribution of Soil PCBs Congeners in Typical Area of Yangtze River Delta Region
长江三角洲典型地区农田土壤多氯联苯空间分布特征

191 surface farmland soil samples were collected from an area of 27 km~2 in typical polluted county of the Yangtze River Delta region and analyzed for concentrations of 16 kinds of polychlorinated biphenyls.The results of statistical analysis indicated that the concentrations of PCBs in the soils ranged from 0.01-484.5(ng/g),with the average concentration of 35.52(ng/g).In farmland soils tri-and tetra-chlorinated biphenyls were the main congeners,and some proportional penta-and hexachlorinated biphenyls als...