Organophosphorus Pesticide Extraction and Cleanup from Soils and Measurement Using GC-NPD

编号 zgly0000372515

文献类型 期刊论文

文献题名 Organophosphorus Pesticide Extraction and Cleanup from Soils and Measurement Using GC-NPD

学科分类 220.1040;森林土壤学

作者 WANGLi-Gang  JIANGXin  MAOYing-Ming  ZHAOZhen-Hua  BIANYong-Rong 

作者单位 InstituteofSubtropicalAgriculture  InstituteofSoilScience 

母体文献 Pedosphere;土壤圈: 英文版 

年卷期 2005,15(3)

页码 386-394

年份 2005 

分类号 S151.93  S482.33 

关键词 萃取提纯  有机磷杀虫剂  土壤成分  农药残留  GC-NPD 

文摘内容 The objectives of this study were to optimize instrumental parameters and conditions for analysis of selected organophosphorus pesticides (OPPs) by gas chromatography (GG) with nitrogen-phosphorus detection (NPD) (GG-NPD); to select an appropriate solvent system; to conduct a comparison of sonication and shaking extractions; and to select an appropriate procedure for extracting organophosphorus pesticides from soils. Procedure Ⅰ consisted of n-hexane or petroleum ether together with acetone used as solvents, while Procedure II contained several solvents including acetone,methanol, dichloromethane, and n-hexane or petroleum ether. Experimental results indicated that a mixture of petroleum ether/acetone (2:1, v/v) could be used in place of n-hexane/acetone (2:1, v/v) as it was a less expensive solvent system.In addition, shaking under a water bath at 20℃ was more effective than sonication. Also, Procedure Ⅰ was more effective,safer, and more timesaving than Procedure Ⅱ. Procedure Ⅰ was applied to three soil types of different organic matter content, with recoveries of the OPPs from the yellow-brown soils, which had a higher organic matter content, being lower than those from the yellow and red soils。