毛细管气相色谱法测定柑桔及土壤中的哒螨酮残留量  

Capillary Gas Chromatography Determination of Pyridaben Residues in Citrus and Soil

作　　者：李蓓[1] 杨仁斌[1] 佘佳荣[1] 

机构地区：[1]湖南农业大学农业环保研究所,湖南长沙410128

出　　处：《西南农业学报》2009年第3期648-650,共3页Southwest China Journal of Agricultural Sciences

基　　金：农业部农药残留基金项目(NC060023)

摘　　要：采用GC测定方法，对哒螨酮在柑桔和土壤中残留量的检测方法进行了研究。该方法中样品经丙酮提取，氧化铝柱净化，采用ECD检测；研究结果表明：方法对标样的最小检出量为1．0×10^-12g，对桔皮、桔肉和土壤的最低检出浓度为0．01、0．005、0．002mg／kg；样品中哒螨酮的平均添加回收率为84．41％-93．08％，变异系数为1．6％～11．69％。该方法的建立为确定达螨酮在柑桔上的残留检测方法提供了科学的依据。The gas chromratographic（GC） method was used for detecting pyridaben residue on soil samples which were extracted with acetone,the extracts were purified Al2O3 column, and subjected to gas chromatography with ECD. Results indicated that minimum detectable level in standard samples was 1.0 ×10^-12g, and lowest detectable concentration in mandarin orange peels,pulp, and soil samples was 0.01,0. 005,0.002 mg/kg,respectively. The recovery rates of pyridaben were 84.41% -93.08 % ,coefficients of variation from 1.6 % - 11.69 %. The analytical method could offer certain scientific referrence for determining pyridaben residues in mandarin oranges.

关 键 词：哒螨酮 气相色谱 农药残留 检测方法 

分 类 号：X830.2[环境科学与工程—环境工程]