农业环境科学学报2013，Vol.32Issue(6)：1219-1225,7.DOI:10.11654/jaes.2013.06.019
新乡市地表水沉积物中HCHs和DDTs的特征及生态风险
Distribution and Risk Assessment of HCHs and DDTs in Sediments from Xinxiang Surface Water
摘要
Abstract
This work investigated contamination status of the HCHs and DDTs in sediments from surface water,Xinxiang City.Sediments used in this study were collected from 18 sites in surface water of Xinxiang in January 2007.The levels and distribution patterns of the HCHs and DDTs in samples were investigated by the technique of soxhlet extraction followed by the analysis of gas chromatography (GC) coupled with a electron capture detector(ECD).In addition,the potential sources as well as ecological risks of HCHs and DDTs were analyzed.The concentrations of ∑ HCHs(α-,β-,γ-and δ-HCH) and ∑ DDTs(p,p'-DDT,o,p'-DDT,p,p'-DDE and p,p'-DDD) in sediments ranged from 1.13 ng·g-1 to 8.12 ng·g-1(average,2.88 ng·g-1 dw) and 2.38 ng·g-1 to 22.67 ng·g-1 dw(average,8.07 ng·g-1 dw),respectively.The compositional analysis of DDTs suggested that historical usage of technical DDTs was the main reason for DDTs residues in the sediments from surface water of Xinxiang,while fresh DDTs inputs from dicofol application were likely to occurred in this region.The ratios of HCHs isomers indicated the present of lindane in the area.Compared with some published guideline values of OCPs in sediments,the concentrations of HCHs were at safe levels while the residues of DDT would pose adverse biological effects in this studied area.关键词
HCHs/DDTs/风险评价/沉积物/新乡市地表水Key words
HCHs/ DDTs/ risk assessment/ sediment/ Xinxiang surface water分类
资源环境引用本文复制引用
冯精兰,刘书卉,申君慧,栗笑迎,孙剑辉..新乡市地表水沉积物中HCHs和DDTs的特征及生态风险[J].农业环境科学学报,2013,32(6):1219-1225,7.基金项目
国家自然基金资助项目(41103071) （41103071）
国家博士后基金资助(2012M511580) （2012M511580）
河南省基础与前沿技术研究项目(102300410193,102300420196,122300410270) （102300410193,102300420196,122300410270）
河南省科技创新人才计划(134200510014) （134200510014）
河南省创新型科技人才队伍建设工程 （）
