气相色谱-质谱法测定蔬菜与水果中11种三唑类农药残留  

Determination of 11 Triazole Pesticides Residues in Fruits and Vegetables by Gas Chromatography-Mass Spectrometry

作　　者：葛娜[1] 刘晓茂[1] 李学民[1] 黄学者[1] 吴艳萍[1] 李金[1] 刘永明[1] 

机构地区：[1]秦皇岛出入境检验检疫局,河北秦皇岛066004

出　　处：《分析测试学报》2011年第12期1351-1355,共5页Journal of Instrumental Analysis

基　　金：行业标准资助项目(2010B144)

摘　　要：建立了蔬菜和水果中11种三唑类农药残留的气相色谱-质谱(GC-MS)测定方法。样品用乙腈均质提取,经石墨化炭黑/氨基复合柱净化,乙腈-甲苯(3∶1)洗脱。洗脱液经浓缩、溶剂交换后定容,采用气相色谱-质谱的选择离子监测方式(GC-MSD/SIM)进行测定,内标法定量。方法的线性范围为0.05～5 ng,相关系数为0.996～1.000,对甘蓝、番茄、苹果、柑橘、菠菜5种空白基质分别进行0.01、0.05、0.10 mg/kg 3个水平加标,平均回收率为80%～97%,相对标准偏差(RSD,n=10)为2.5%～8.4%。11种农药的检出限均为0.01 mg/kg。该方法操作简单,灵敏度高,结果准确可靠。A method was developed for the determination of 11 triazole pesticides residues in fruits and vegetables using gas chromatography -mass spectrometry（ GC -MS）. The samples were homogemethod. The calibration curves of 11 triazole pesticides were linear in the range of 0.05 - 5 ng with correlation coefficients of 0. 996 - 1. 000. The spiked recoveries of 11 triazole pesticides from five matrices（ e, g. cabbage, tomato, apple, orange, spinach ） at three spiked levels of 0. 01, 0. 05, 0. 10 mg/kg were in the range of 80% - 97% with relative standard deviations （ RSDs, n = 10） of 2.5% -8.4%. The limits of detection were 0.01 mg/kg for 11 triazole pesticides. The method is simple, sensitive, accurate and reliable.

关 键 词：气相色谱-质谱法 蔬菜 水果 三唑类农药 

分 类 号：O657.63[理学—分析化学] F767.2[理学—化学]