POPs pollution in the sediments of Poyang Lake
- 作者：Liang yueLiu xiaozhenWang yuehuaZhou lifeng
- 会议时间：2009-11-01
- 关键词：Poyang lake ; POPs ; Distribution characteristics
- 作者单位：Dept.of Environmental Science and Engineering,Nanchang Hangkong University,Nanchang 330063,P.R.China
- 母体文献：第十三届世界湖泊大会论文集
- 会议名称：第十三届世界湖泊大会
- 会议地点：武汉
- 主办单位：中国环境科学学会
- 语种：chi
摘要
Objective:Poyang Lake is the biggest fresh lake in China,in order to find out transfer rules and distribution characteristics of POPs in sediments of Poyang lake,samples were collected and analyzed.Methods:The sediment samples of the Lake areas were collected using adjacent water vertical spile method using low water of Poyang Lake in late October and early November in 2006 by the soil sampling implement of pole shape and push pattern.The POPs concentrations of DDTs,HCHs,SP & HCB in the sediment samples were obtained by GC-ECD.Results:In the Poyang Lake area sediments,the average value of HCHs concentrations was 4.010μg/kg and within the primary standard of Soil Environment Quality "GB 15618-1995".(α)-HCH and(γ)-HCH were the mainly present isomers.The DDTs residue content(15.720μg/kg) from Poyang lake district was higher than that(6.210μ g/kg) from the lake entrance of rivers.The average value of Poyang Lake area sediments was 12.262μg/kg and within the primary standard of Soil Environment Quality "GB 15618-1995".P.P(')-DDD was the main isomer.The SP residue in the sediments at the lake entrance of rivers was 8.321μg/kg in 2006,which was 2.60% of 1984's concentration.The HCB concentration was 0.899μg/kg.Conclusion:Based on the biology accumulation and zoology toxicity of POPs,the bottomland sediment of Poyang Lake Area could not be used as the production base of green food.Sediment researches of Poyang lake would provide more information about POPs pollution.