鄱阳湖龙口地区沉积物中有机氯农药的垂向分布特征  

Vertical Distribution Characteristics of Organochlorine Pesticides in Sediments from Longkou of Poyang Lake

作　　者：叶传永[1,2] 陈素华[1] 焦杏春[2] 

机构地区：[1]南昌航空大学环境与化学工程学院,江西南昌330063 [2]国家地质实验测试中心,北京100037

出　　处：《岩矿测试》2009年第4期342-346,共5页Rock and Mineral Analysis

基　　金：国家地质实验测试中心基本科研业务费项目资助(200607CSJ16;200607CSJ22-1);江西省研究生创新基金(YC07A085);南昌航空大学研究生创新基金项目资助(100046315010)

摘　　要：采用电子捕获检测器气相色谱仪（GC—ECD）测定鄱阳湖龙口地区4个沉积物柱样中有机氯农药含量。结果表明，4个沉积物柱样间有机氯农药含量差异显著，总有机氯农药（∑OCPs）含量为7．78～93．7ng／g，总六六六（∑HCHs）含量为0．73～39．6ng／g，总滴滴涕（∑DDTs）的含量为2．44～49．4ng／g。与国内其他同类样品相比，研究区各化合物的含量水平明显偏高；沉积物中总有机碳（TOC）和OCPs有较好的相关关系；与沉积物风险评估值对比，鄱阳湖龙口地区的有机氯农药存在一定的生态风险。The concentration of organochlorine pesticides （OCPs） in 4 sediment samples from Longkou, Poyang Lake was analyzed by GC-ECD. Concentration of the chemicals was in the range of 7.78 - 93.7 ng/g for total OCPs, 0.73 - 39.6 ng/g for HCHs and 2.44 - 49.4 ng/g for DDTs. Compared with sediments from other areas, OCPs concentrations in sediments were much higher in the studied area. Concentrations of OCPs and total organic carbon （TOC） showed a good correlation in the sediments. By comparing the effects range-median （ERL） and effects range-low （ERM） values for the risk evaluation, OCPs in the surface sediments from Longkou, Poyang Lake has suffered a threat from the ecological risk.

关 键 词：鄱阳湖 沉积物柱样 有机氯农药 

分 类 号：X820.4[环境科学与工程—环境工程] S482.32[农业科学—农药学]