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

作者: Mao YE , Xing-Lun YANG , Ming-Ming SUN , Yong-Rong BIAN , Fang WANG

DOI: 10.1016/S1002-0160(12)60075-7

关键词:

摘要: Abstract 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 extraction method different organic solvents, ethanol, 1-propanol, and three fractions petroleum ether, using a soil collected from Wujiang (WJ), China, region long-term contamination dichlorodiphenyltrichloroethanes (DDTs). evaluated influential factors, including solvent concentration, washing time, mixing speed, solution-to-soil ratio, temperature, on removal DDTs WJ soil. A set relatively better parameters were selected for 100 mL L −1 ether (60–90 °C): time 180 min, speed r min , ratio 10:1, temperature 50 °C. These also applied other seriously OCP-polluted soils. Results demonstrated their broad-spectrum effectiveness excellent OCP performance contaminated soils characteristics.

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