新疆典型农业地区土壤中有机氯农药(OCPs)分布特征及风险评价.pdf

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1、新疆典型农业地区土壤中有机氯农药(OCPs)分布特征及风险评价冉聃鲁建江姚晓瑞刘子龙杜志坚张硕石河子大学化学化工学院，新疆兵团化工绿色过程重点实验室，石河子832003摘要：为加强有机氯农药（organic chlorinated pesticides，OCPs）的污染预防与控制，该研究分析了新疆典型农业地区有机氯农药的污染状况并对其进行了风险评价。采集表层土壤样品36个，分析其中15种OCPs的残留状况。六六六(Hexachlorocyclohexanes，HCHs)、滴滴涕（dichlorodiphenyltrichioroethanes，DDTs）、氯丹类化合物、硫丹和硫丹盐的质量分数范

2、围分别是0.3722.82、0.91858.47、0.1547.08 ng/g、N.D（未检出）16.27和N.D73.83 ng/g。对OCPs的来源进行分析，发现HCHs来源于历史上工业HCHs的使用或近期林丹的输入，DDT来源于工业品的违法使用和三氯杀螨醇的使用，研究区域氯丹存在新的来源，而硫丹新来源较少。通过主成分分析，从15种OCPs中提取了5个主成分，总方差解释量达到了79.93。5个主成分分别归因于DDT和工业HCH s的使用、OCPs原料的差异以及研究区域内病虫害的发病特征等。利用灰色关联分析研究区域内OCPs污染状况，结果表明石河子污染水平最高，各研究区域土壤均需要采取进一步

3、的污染控制措施。农业土壤;农药;分布特征;风险评价;有机氯;新疆10. 3969/j.issn. 1002-6819.2012.03.039X53A1002-6819(2012)-03-0225-052011-04-202011-11-18国家自然科学基金资助(20967007); EEPSEA-中国环境经济研究项目(20004801)资助冉聃(1987-)，女，石河子石河子大学化学化工学院/新疆兵团化工绿色过程重点实验室，832003。Email: 鲁建江(1967-),男，副教授。石河子石河子大学化学化工学院/新疆兵团化工绿色过程重点实验室,832003。Email: ljj_万方数据峰面

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