Estimation of Organochlorine Pesticides (DDT and HCH) in Surface Sediments from Baihua Lake 5,6.
Baihua Lake, a man-made reservoir located in a typical plateau karstic area, is one of the five drinking water sources for Guiyang city. In the present research, contents of organochlorine pesticides (including o,p’-DDT, p,p’-DDT, p,p’-DDD, p,p’-DDE, α-HCH, β-HCH, γ-HCH and δ-HCH) in eight surface sediment samples collected from Baihua Lake were estimated by gas chromatography-electron capture detector (GC-ECD). The results showed that the concentration of DDTs was in the range from 1.0 to 16.3 ng g-1 (dry weight), and that of HCHs varied from 0.3 to 7.6 ng g-1. p, p’-DDE and p, p’-DDD were the most significant contaminants in sediments, with the average concentrations up to 2900 pg g-1 and 3700 pg g-1, respectively. A high value of (DDD+DDE)/DDT revealed that there is no recent use of DDT in the surrounding areas. The α/γratio of HCH implied the input of both technical HCH and lindane. Principle component analysis (PCA) of the results implicated that the distribution characteristics of these OCPs were primarily affected by two potential factors. Hierarchical cluster analysis (HCA) demonstrated that these eight samples could be divided into three groups and there was a distinct difference in the pollution degree of sediment samples.
Li-ya FU Jin LUO Ji-wei HU Qing WU Xian-fei HUANG Lin-feng TIAN
Guizhou Provincial Key Laboratory for Information System of Mountainous Areas and Protection of Ecological Environment,Guizhou Normal University, Guiyang, 550001, China978-1-935068-68-6 .2010 SciRes.
国际会议
The Fifth International Conference on Waste Management and Technology(第五届固体废物管理与技术国际会议)
北京
英文
534-538
2010-11-01（万方平台首次上网日期，不代表论文的发表时间）