气相色谱-质谱法测定苹果和番茄中11种农药残留

晁桂梅; 赵舒景; 陈恳; 马莉; 金博艳

doi:10.13386/j.issn1002-0306.2020.16.036

气相色谱-质谱法测定苹果和番茄中11种农药残留

上海市崇明食品药品检验所, 上海市崇明区食品安全检测中心, 上海 202150

基金项目:

崇明区科学技术委员会科技项目(CK2019-49)。

详细信息

作者简介:
晁桂梅(1988-),女,博士研究生,农艺师,研究方向:食品、农产品检验,E-mail:cgm880806@163.com。

通讯作者:
金博艳(1982-),女,本科,工程师,研究方向:食品、农产品检验,E-mail:jinboyan_1982@126.com。

中图分类号: TS207.3
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出版历程
- 收稿日期: 2019-12-12
- 网络出版日期: 2020-11-12
- 刊出日期: 2020-08-14

Determination of 11 Kinds of Pesticide Residues in Apple and Tomato by Gas Chromatography-Mass Spectrometry

Shanghai Chongming Food Safety Testing Center, Shanghai Chongming Institute for Food and Drug Control, Shanghai 202150, China

摘要

摘要: 建立气相色谱-质谱联用法分别检测苹果、番茄两种基质中11种农药残留的测定方法。样品经乙腈提取,SPE NH₂柱净化,净化液浓缩,正己烷定容后,采用气相色谱-质谱联用法测定,外标法定量。结果表明,在定量限至五倍定量限浓度范围内,两种基质中11种农药的线性方程相关系数大于0.998,检出限和定量限范围分别为0.0038~0.0300和0.0126~0.1000 mg/kg,3个浓度点6个平行样品的加标平均回收率在81.4%~118.3%之间,相对标准偏差低于10%。本方法具有前处理简单快捷、准确度和精密度高、检测成本相对较低等优点。
- 气相色谱-质谱法 /
- 苹果 /
- 番茄 /
- 农药残留
Abstract: A method for determination of 11 kinds of pesticide residues in apple and tomato by gas chromatography-mass spectrometry was established in this study. The sample was extracted by acetonitrile,purified through SPE NH₂ column,and then the purified solution wad concentrated,redissolved with n-hexane,and determined by gas chromatography-mass spectrometry,and quantified by external standard method. The results showed that within a certain mass concentration range,the correlation coefficients of the linear equation of 11 kinds of pesticides in the two substrates were more than 0.998,the detection limit and the quantitative limit were respectively 0.0038~0.0300 and 0.0126~0.1000 mg/kg,and the average recoveries of 6 parallel samples addition standards at 3 concentration points were between 81.4% and 118.3%,and the relative standard deviation was less than 10%. This method had the advantages of simple and rapid pretreatment,high accuracy and precision,and low detection cost relatively.
- gas chromatography-mass spectrometry /
- apple /
- tomato /
- pesticide residues