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Position: Home > Articles > Determination of Acetochlor and 2,4-D Butyl Ester Residues in Corn and Soil by Gas Chromatography Modern Agrochemicals 2011,10 (2) 40-42+62

气相色谱法同时测定玉米和土壤中乙草胺和2,4-滴丁酯残留

作  者:
李瑞娟;张晓梅;于建垒;宋国春;辛志梅
单  位:
山东省农业科学院植物保护研究所;山东省兖州市农业局
关键词:
玉米;土壤;乙草胺;2,4-滴丁酯;气相色谱;残留
摘  要:
建立了用气相色谱法同时测定玉米植株、籽粒及土壤中乙草胺和2,4-滴丁酯的残留分析方法。玉米植株、籽粒中的乙草胺和2,4-滴丁酯经石油醚超声波提取,弗罗里硅土柱净化,土壤经二氯甲烷超声波提取,提取液浓缩至干后石油醚定容,气相色谱法电子捕获检测器测定。结果表明,乙草胺在玉米植株、籽粒、土壤中的添加回收率为85.0%~98.6%,相对标准偏差(RSD,n=3)为1.1%~3.4%;2,4-滴丁酯在玉米植株、籽粒、土壤中的添加回收率为83.0%~98.5%,相对标准偏差(RSD,n=3)为0.9%~2.4%。乙草胺和2,4-滴丁酯在样品中的最低检出浓度均为0.01 mg/kg。
译  名:
Determination of Acetochlor and 2,4-D Butyl Ester Residues in Corn and Soil by Gas Chromatography
作  者:
LI Rui-juan1,ZHANG Xiao-mei2,YU Jian-lei1,SONG Guo-chun1,XIN Zhi-mei1(Plant Protection Institute of Shandong Academy of Agricultural Sciences,Jinan 250100,China;2.Yanzhou City Agriculture Bureau,Shandong Yanzhou 272100,China)
关键词:
corn;soil;acetochlor;2,4-D butylester;gas chromatography(GC);residue
摘  要:
An analytical method of acetochlor and 2,4-D butyl ester residues in corn and soil by gas chromatography equipped with an electron-capture detector(GC-ECD) was developed.Corn samples were extracted with petroleum ether and cleaned up with Florisil column,and soil samples were extracted with dichloromethane by ultrasonic method.The fortified recoveries of acetochlor and 2,4-D butyl ester in samples were 85.0%-98.6% and 83.0%-98.5%,respectively.Relative standard deviation was less than 3.4% for acetochlor and 2.4% for 2,4-D butyl ester,and the limit of detection of two pesticides in samples was 0.01 mg/kg,respectively.

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