Residues and Distribution Character of HCHs and DDTs in Surface Sediments from the Intertidal Zone in Tanggu, Tianjin City

摘要：

A total of 22 surface sediment samples were collected from Tanggu intertidal zone in October, 2006. HCHs and DDTs were analyzed by GC/ECD, the detection rates of for HCHs and DDTs were 100％ and 81.8％, respectively. The concentration range of HCHs and DDTs in the sediments were 0.056–2.63ng/g and 0–8.04 ng/g-dry weight (dw), respectively, which shows the concentration of DDTs was higher than HCHs. The analysing results of the pollutant sources shows that discharging of pesticide application offered lots of HCHs and DDTs, furthermore, sediment types and the contents of the organic matter influenced the distribution of HCHs and DDTs in the sediments strongly. Contamination degree of HCHs and DDTs in the sediments of Tanggu intertidal zone is relatively lower than other areas. Comparing with ERL and ERM value of risk evaluation, DDTs in the sediments posed a bit high risk to consumers of the bottom-dwelling.

关键词： HCHs DDTs Tanggu intertidal zone surface sediments risk evaluation

作者: LIU Xianbin NIE Lihong TIAN Shengyan JIANG Zhongpeng ZHANG Runsheng ZHANG Guangyu LI Xin MAO Tianyu

作者单位: College of Marine Science & Technology, Tianjin University of Science & Technology, Tianjin 300457, Tianjin Research Institute of Water Transport Engineering Laboratory of Environmental Protection in

会议类型: 国际会议

会议名称: 2007环境科学与技术国际会议(The 2007 International Symposium on Environmental Science and Technology)

会议地点: 北京

会议语种:英文

在线出版日期: 2007-11-13（万方平台首次上网日期，不代表论文的发表时间）