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当前位置: 首页 > 文章 > 太湖流域某农业区浅层地下水有机氯农药残留特征初探 农业环境科学学报 2007,26 (05) 1714-1718
Position: Home > Articles > Residues of Organochlorine Pesticides in Shallow Groundwater of Agricultural Region in Taihu Basin Journal of Agro-Environment Science 2007,26 (05) 1714-1718

太湖流域某农业区浅层地下水有机氯农药残留特征初探

作  者：
李炳华;任仲宇;陈鸿汉;曹晓娟;刘菲
单  位：
中国地质大学北京市水资源与环境工程重点实验室;国家地质实验测试中心
关键词：
浅层地下水;有机氯农药;残留;污染源
摘  要：
采用GC/ECD分析了太湖流域农业区56个浅层地下水水样。结果表明,水样中14种待测的有机氯农药,除P,P'-DDT无检出外,其他均有检出,检出率最高的为狄氏剂39.29%,其次为六氯苯33.93%,最小的为γ-六六六和异狄氏剂8.93%。有机氯农药组分检出浓度介于0.0004～1.37"g·L-1,各组分平均检出浓度在0.003～0.144"g·L-1之间,仅有部分样点中的狄氏剂和总HCHS浓度超过其相应的饮用水水质标准。有机氯农药的检出点分布和土地耕作方式、施用量、河网水质具有一定的关系。α-HCH/γ-HCH比值范围在0.10～0.36之间,平均值为0.20,狄氏剂和艾氏剂的比值范围介于0.17～36.14,平均值为13.28,七氯和其降解产物七氯环氧的比值范围为17.52～83.42,说明这些组分除残留污染源外,很可能有其他新的污染源输入,而浅层地下水中的异狄氏剂、六氯苯等来自残留污染源。
译  名：
Residues of Organochlorine Pesticides in Shallow Groundwater of Agricultural Region in Taihu Basin
作  者：
LI Bing-hua1,REN Zhong-yu1,CHEN Hong-han1,CAO Xiao-juan2,LIU Fei1 (1. Beijing Key Laboratory of Water Resources and Environment,China University of Geosciences,Beijing 100083,China; 2.National Research Center for Geoanalysis,Beijing 100037,China)
关键词：
shallow groundwater; organochlorine pesticides; residue; pollution source
摘  要：
Totally 56 shallow groundwater samples collected from agriculture region in Taihu basin were analyzed by using GC/ECD. Among the 14 compounds to be analyzed in those samples,13 components were detectable except p,p'-DDT. The highest detected rate was 39.29% for dieldrin,next to which was 33.93% for hexachlorobenze,and the lowest was 8.93% for r-HCH and endrin. The detectable concentrations of them ranged from 0.000 4 μg·L-1 to 1.37 μg·L-1 while the average concentration of each detected compounds ranged from 0.003 μg·L-1 to 0.144 μg·L-1. The concentrations of the total HCHs and endrin in some samples were above their corresponding water-quality standard for drinking while those of others were far lower than their standards for drinking. The distribution of detected organochlorine pesticides was related with soil cultivated style and water quality in rivers. The ratio of α-HCH to γ-HCH ranged from 0.10 to 0.36 with an average of 0.20,and the ratio of dieldrine to aldrin ranged from 0.17 to 36.14 with an average of 13.28. The ratio of heptachlor to heptachlor expoxite ranged from 17.52 to 83.42. The results indicated that HCHs,endrin and heptachlor might have other pollution sources in addition to these residues. The pollution source of endrin,HCB and so on in shallow groundwater were due to residue source.

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