气相色谱-负化学离子源质谱法测定牛肉中拟除虫菊酯类农药残留  

Determination of Pyrethroid Residues in Animal Derived Food by GC-NCI-MS

作　　者：李跃海 LI Yue-hai(Zhangzhou Product Quality Inspection Institute,Zhangzhou 363000,China)

机构地区：[1]漳州市产品质量检验所,福建漳州363000

出　　处：《长春师范大学学报》2023年第8期83-88,共6页Journal of Changchun Normal University

摘　　要：建立气相色谱-负化学离子源质谱法同时测定牛肉中15种拟除虫菊酯类农药残留的方法。试样经乙腈提取,固相萃取柱净化,浓缩过滤后利用气相色谱-负化学离子源质谱测定,采用外标法进行定量。该方法具有较好的回收率、较低的检测限和良好的精密度。15种农药残留的回收率范围在91.92%~109.83%之间,定量限在0.2~5.0μg/kg之间,相对标准偏差在4.03%~14.58%之间,以上数据表明该方法具有良好的准确度,可应用于动物源性食品中的农药残留检测。For the first time,a gas chromatography-negative chemical ion source mass spectrometry method has been established for the simultaneous determination of 15 pyrethroid residues in beef.The sample was extracted with acetonitrile,purified with a solid-phase extraction column,concentrated and filtered,and determined using gas chromatography-negative chemical ion source mass spectrometry.The external standard method was used for quantification.This method has good recovery rate,low detection limit,and good precision.The recovery rates of 15 pesticide residues range from 91.92%to 109.83%,with a quantitative limit of 0.2 to 5.0μg/kg.The relative standard deviation is between 4.03%and 14.58%.The above data indicates that this method has good accuracy and can be applied to the detection of pesticide residues in animal derived foods.

关 键 词：拟除虫菊酯 气相色谱-负化学源质谱法 农药 提取 净化 

分 类 号：O65[理学—分析化学]