Use of Organic Solvents to Extract Organochlorine Pesticides (OCPs) from Aged Contaminated Soils

YE Mao; JIN Xin; JIANG Xin; YANG Xing-Lun; SUN Ming-Ming; BIAN Yong-Rong; WANG Fang; GU Cheng-Gang; WEI Hai-Jiang; SONG Yang; WANG Lei

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Use of Organic Solvents to Extract Organochlorine Pesticides (OCPs) from Aged Contaminated Soils

机译：使用有机溶剂从老化的污染土壤中提取有机氯农药（OCP）

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Problems associated with organochlorine pesticide (OCP)-contaminated sites in China have received wide attention.To solve such problems,innovative ex-situ methods of site remediation are urgently needed.We investigated the feasibility of the extraction method with different organic solvents,ethanol,1-propanol,and three fractions of petroleum ether,using a soil collected from Wujiang (WJ),China,a region with long-term contamination of dichlorodiphenyltrichloroethanes (DDTs).We evaluated different influential factors,including organic solvent concentration,washing time,mixing speed,solution-to-soil ratio,and washing temperature,on the removal of DDTs from the WJ soil.A set of relatively better parameters were selected for extraction with 100 mL L-1 petroleum ether (60-90 ℃):washing time of 180 min,mixing speed of 100 r min-1,solution-to-soil ratio of 10:1,and washing temperature of 50 ℃.These selected parameters were also applied on three other seriously OCP-polluted soils.Results demonstrated their broad-spectrum effectiveness and excellent OCP extraction performance on the contaminated soils with different characteristics.

机译：在中国，与有机氯农药污染场地有关的问题已引起广泛关注。为解决这些问题，迫切需要创新的异地修复方法。我们研究了使用不同有机溶剂，乙醇，使用从长期污染二氯二苯基三氯乙烷（DDT）的中国吴江（WJ）收集的土壤中提取1-丙醇和三部分石油醚。从WJ土壤中去除DDTs的混合速度，固液比和洗涤温度。选择一组相对较好的参数以100 mL L-1石油醚（60-90℃）萃取：洗涤时间为180分钟，混合速度为100 r min-1，固液比为10：1，洗涤温度为50℃。这些选定的参数还应用于其他三种OCP严重污染的土壤。在具有不同特征的受污染土壤上处理了它们的广谱有效性和出色的OCP提取性能。

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《土壤圈（英文版）》 |2013年第1期|10-19|共10页
作者
YE Mao; JIN Xin; JIANG Xin; YANG Xing-Lun; SUN Ming-Ming; BIAN Yong-Rong; WANG Fang; GU Cheng-Gang; WEI Hai-Jiang; SONG Yang; WANG Lei;
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作者单位

State Key Laboratory of Soil and Sustainable Agriculture, Institute of Soil Science, Chinese Academy of Sciences, Nanjing 210008,China;

State Key Laboratory of Soil and Sustainable Agriculture, Institute of Soil Science, Chinese Academy of Sciences, Nanjing 210008,China;

State Key Laboratory of Soil and Sustainable Agriculture, Institute of Soil Science, Chinese Academy of Sciences, Nanjing 210008,China;

State Key Laboratory of Soil and Sustainable Agriculture, Institute of Soil Science, Chinese Academy of Sciences, Nanjing 210008,China;

State Key Laboratory of Soil and Sustainable Agriculture, Institute of Soil Science, Chinese Academy of Sciences, Nanjing 210008,China;

State Key Laboratory of Soil and Sustainable Agriculture, Institute of Soil Science, Chinese Academy of Sciences, Nanjing 210008,China;

State Key Laboratory of Soil and Sustainable Agriculture, Institute of Soil Science, Chinese Academy of Sciences, Nanjing 210008,China;

State Key Laboratory of Soil and Sustainable Agriculture, Institute of Soil Science, Chinese Academy of Sciences, Nanjing 210008,China;

State Key Laboratory of Soil and Sustainable Agriculture, Institute of Soil Science, Chinese Academy of Sciences, Nanjing 210008,China;

State Key Laboratory of Soil and Sustainable Agriculture, Institute of Soil Science, Chinese Academy of Sciences, Nanjing 210008,China;

State Key Laboratory of Soil and Sustainable Agriculture, Institute of Soil Science, Chinese Academy of Sciences, Nanjing 210008,China;

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Use of Organic Solvents to Extract Organochlorine Pesticides (OCPs) from Aged Contaminated Soils

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