Distribution of Organochlorine Pesticides in Surface Sediments of Intertidal Zone from Gaoshaling, Tianjin
Quantitative analysis of organchlorine pesticides (OCPs) in surface sediments of intertidal zone from Gaoshaling, Tianjin was introduced to evaluate their distribution features, potential pollution and risks. 12 sediment samples from 3 sections were collected in Nov., 2006. The concentration of total OCPs in surface sediments varied from 7.26 to 78.42 ng·g-1. The level of total HCHs (a-, β-, γ-, δ-HCH) and total DDTs (p, p-DDD, p, p-DDE, p, p-DDT, o, p-DDD) in surface sediments were 0.00-123.09 ng·g-1 and 3.54-44.41 ng·g-1, respectively. The dominant pollutants of OCPs in the surface sediments was γ-HCH and δ-HCH among HCHs, and p, p-DDE among DDTs. Distribution features of HCHs and DDTs show that the sources of contaminations are different. HCHs and DDTs in sediment samples are higher than normally found in sediments of domestic and foreign rivers, which indicate that the previous excessive usage of OCPs is the main reason for the residues of HCHs and DDTs in Tianjin.
distribution intertidal zone sediment OCPs HCHs DDTs
LIU Xianbin SUN Lianna NIE Lihong JIANG Shengping TIAN Shengyan
Tianjin Key Lab of Marine Resource & Chemistry,Tianjin University of Science & Technology,Tianjin 300457,China
国际会议
2009 International Symposium on Environmental Science and Technology(2009环境科学与技术国际会议)
上海
英文
2094-2097
2009-06-02（万方平台首次上网日期，不代表论文的发表时间）