气相色谱-串联质谱法测定百合(干)中7种有机磷农药残留  

Rapid Determination of 7 Organophosphorus Pesticide in Dried Lily Bulb by Gas Chromatography-Tandem Mass Spectrometry Coupled with QuEChERS

作　　者：万静 王健雄 WAN Jing;WANG Jianxiong(Food Inspection Center,Kunming Institute for Food and Drag Control,Kunming 650032,China;Yunnan Water Supply Investment Co.,Ltd.,Kunming 650051,China)

机构地区：[1]昆明市食品药品检验所食品检验中心,云南昆明650032 [2]云南水投供水投资有限公司,云南昆明650051

出　　处：《食品安全导刊》2023年第16期93-96,共4页China Food Safety Magazine

摘　　要：运用气相色谱-三重四极杆串联质谱法对百合(干)中7种有机磷农药残留进行测定。农药用乙腈提取,提取液用分散固相萃取(N-丙基乙二胺、十八烷基键合硅胶、石墨化炭黑粉末)净化,采用外标法定量。7种农药在百合(干)中均表现为强基质效应,在基质匹配标准溶液0.005~0.300 mg·L^(-1)的质量浓度内线性关系良好,相关系数(R^(2))均大于0.99;平均回收率在71.79%~111.87%,相对标准偏差在0.53%~4.59%,该方法的检出限为0.80~2.43μg·kg^(-1)。该方法重复性和精密度好,可适用于百合(干)中有机磷农药残留的检测。A method for the determination of 7 organophosphorus pesticide residues in dried lily bulb by gas chromatography-triple quadrupole tandem mass spectrometry was established.Pesticides were extracted with acetonitrile,and the extract was purified by dispersive solid phase extraction(PSA,C18,and GCB),and quantified by external standard method.Seven organophosphorus pesticides showed exhibited matrix enhancement effects,the linear relationship was good in the range of 0.005~0.300 mg·L^(-1) of matrix matching standard solution,and the linear correlation coefficients(R^(2))was greater than 0.99;the average recoveries ranged from 71.79%to 111.87%,and the relative standard deviations(RSDs)were 0.53%~4.59%.The limit of detection of the established method were in the range of 0.80μg·kg^(-1) to 2.43μg·kg^(-1).The method has the characteristics of good repeatability and precision,and can be used for the detection of organophosphorus pesticide in dried lily bulb.

关 键 词：百合(干) 有机磷农药 基质效应 气相色谱-三重四级串联质谱法 

分 类 号：O657.63[理学—分析化学] TS207.53[理学—化学]