Effect of Aging Organochlorine Pesticides in Various Soil Types on Their Extractability Using Selective Pressurized Liquid Extraction  

作　　者：Ahmed Hussen Negussie Megersa Jan Ake Jonsson 

机构地区：[1]Center for Analysis and Synthesis,Department of Chemistry,Lund University,Lund,Sweden [2]Center for Environmental Science,Addis Ababa University,Addis Ababa,Ethiopia [3]Department of Chemistry,Addis Ababa University,Addis Ababa,Ethiopia

出　　处：《Journal of Environmental Protection》2017年第8期867-883,共17页环境保护（英文）

基　　金：financial support provided by the Swedish International Development Agency;the Department for Research Co-operation(SIDA/SAREC)and the International Science Program(ISP).

摘　　要：In this study, extractability of 13 organochlorine pesticides aged in six different soil types, was investigated. Acceptable recoveries were achieved for most of the analytes spiked into five of the soil types. No apparent correlation was perceptible between the soil characteristics and extractability of the aged analytes, signifying exhaustiveness of the extraction. However, recovery was considerably minimized (<75%) in the clay ensuring the hypothesis of study stating “extraction efficiency might be matrix dependent”. Therefore, the study demonstrates importance of optimizing extraction conditions even for those believed to be less prone to matrix effect, due to distinct properties of analyte-matrix interactions.In this study, extractability of 13 organochlorine pesticides aged in six different soil types, was investigated. Acceptable recoveries were achieved for most of the analytes spiked into five of the soil types. No apparent correlation was perceptible between the soil characteristics and extractability of the aged analytes, signifying exhaustiveness of the extraction. However, recovery was considerably minimized (<75%) in the clay ensuring the hypothesis of study stating “extraction efficiency might be matrix dependent”. Therefore, the study demonstrates importance of optimizing extraction conditions even for those believed to be less prone to matrix effect, due to distinct properties of analyte-matrix interactions.

关 键 词：Organochlorine Pesticides EXTRACTABILITY Exhaustive Extraction Matrix Effect Soil Characteristics Analyte-Matrix Interactions 

分 类 号：R73[医药卫生—肿瘤]