基质固相分散法测定大蒜中11种有机氯农药残留  

Determination for Pesticide Residues of 11 Organochlorines in Garlic by Matrix Solid-phase Dispersion Method

作　　者：孙艳艳[1,2] 王菡[3] 陈晓辉[1] 孙立新[1] 毕开顺[1] 储晓刚[2] 

机构地区：[1]沈阳药科大学,辽宁沈阳110016 [2]中国检验检疫科学研究院,北京100123 [3]沈阳农业大学,辽宁沈阳110161

出　　处：《现代科学仪器》2009年第3期55-57,共3页Modern Scientific Instruments

基　　金：科技部"十一五"重大支撑项目课题农兽药残留确证检测技术研究2006BAK02A08

摘　　要：本文建立了以弗罗里硅土为分散剂、乙酸乙酯+正已烷(V/V,1/9)为洗脱剂提取大蒜中十一种有机氯农药的基质固相分散法(MSPD),通过研究固相分散剂的净化效果和洗脱剂的极性,优化了方法的条件,并以气相色谱-质谱联用选择离子扫描方式进行检测。对建立的方法进行了评价,结果表明:11种有机氯农药的定量下限(S/N=10)在0.015-0.0.3mg/kg之间,在加标水平为0.25μg/mL和2.5μg/mL时,添加样品的回收率在76.6%-108.6%之间,相对标准偏差在1.2%-10.6%之间。A method based on matrix solid-phase dispersion （MSPD） extraction with florisil was developed to determine pesticide residues of 11 organochlorines in garlic. Different solid-phase and eluting solvent were investigated. The proposed analytical method was evaluated. The results show that the recovery rate range is 75%-110% with relative standard deviation lower than 10.6%, the LOQ of the 11 organochlorines is between 0.015 and 0.03mg/kg.

关 键 词：大蒜 农药残留 基质固相分散 

分 类 号：TS255.7[轻工技术与工程—农产品加工及贮藏工程]