title: [Distribution of HCB discharged from a chemical plant in plants].
abstract: The distribution characteristics of hexachlorobenzene (HCB) in plant and rhizosphere soil in contamination conduit, a nearby river and a cropland were studied and the impact factors were also discussed. The results are summarized as follows: the range of the HCB concentration in plant and rhizosphere soil in investigation area were respectively from 4.45 microg x kg(-1) to 1,189.89 microg x kg(-1) (dw) and from 27.93 microg x kg(-1) to 3,480.71 microg x kg(-1) (dw). Higher enrichment of HCB in woodplant than herbs due to higher fat concentration in woodplant in the contamination conduit and the rich concentrtion factor of woodplant and herbs were 0.41-2.55 and 0.01-1.34. The range of HCB concentrations in plants in nearby croplands was significantly wide (4.45-333.1 microg x kg(-1)) while HCB concentrations in different parts of plant were various, e.g. HCB concentrations in fruit, root and shoot of taro were 318.77 microg x kg(-1), 281.02 microg x kg(-1) and 10.94 microg x kg(-1). There was a remarkable positive relation between the concentrations of HCB in plant and fat concentration of plant while no relativity between the concentrations of HCB in plant and those in ground soils in the contamination conduit and cropland. The concentration levels of HCB in plant and rhizosphere soil in river were dramatically decreased with increasing distance from contaminated conduit. There was a remarkable positive relation between the concentrations of HCB in plant and those in ground soils but no relation between concentrations of HCB in plant and fat concentration of plant in river. The distribution characteristics of HCB in plants were influenced by contaminated levels, fat concentration and Partition-transfer model.
authors: Environmental Science Research Institution, Huazhong University of Science and Technology, Wuhan 430074, China. chjing@tsinghua.edu.cn
authors: Jing
authors: J
authors: Chen
authors: Lin-Ling
authors: LL
authors: Wang
authors: Xiao-Hua
authors: XH
authors: Lu
authors: Song-Hu
authors: SH
authors: Yuan
authors: Xi-Xiang
authors: XX
authors: Liu
authors: Yue
authors: Y
authors: Wang
authors: Qian
authors: Q
authors: Zhao
authors: Ling-Fang
authors: LF
authors: Mei
mesh_terms: D002617:Chemical Industry; D018556:Crops, Agricultural / Q000737:chemistry; D005506:Food Contamination / Q000032:analysis*; D006581:Hexachlorobenzene / Q000032:analysis*; D010944:Plants / Q000737:chemistry*; D012989:Soil Pollutants / Q000032:analysis*
chemical_list: D012989:Soil Pollutants; D006581:Hexachlorobenzene