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超高压液相色谱-串联质谱测定茶叶中10种极性农药残留
引用本文:陈红平,刘新,王川丕,汪庆华,蒋迎.超高压液相色谱-串联质谱测定茶叶中10种极性农药残留[J].分析试验室,2011,30(8).
作者姓名:陈红平  刘新  王川丕  汪庆华  蒋迎
作者单位:中国农业科学院茶叶研究所,农业部茶叶质量监督检验测试中心,杭州310008
基金项目:现代农业产业技术体系建设专项基金(nycytx-26)资助
摘    要:建立了绿茶、乌龙茶、红茶和普洱茶中8种氨基甲酸酯和2种烟碱类农药等10种极性农药残留超高压液相色谱-串联质谱(UPLC-MS/MS)检测方法。茶叶样品经水润湿15 min后,乙腈提取,Carbon/NH2固相萃取净化,乙腈-甲苯(3:1V/V)淋洗。UPLC-MS/MS采用电喷雾电离(ESI),多反应监测模式(MRM)分析。方法在7.5,15,30μg/kg添加水平上回收率达到72.2%~92.5%,RSD≤9.2%。10种农药的基质效应因不同农药和不同种类茶叶基质存在较大差异,且均表现为基质抑制效应,因此校正工作液需采用相似茶叶空白基质配制。方法的定量限(LOQ)均达到7.5μg/kg.

关 键 词:超高压液相色谱-串联质谱  极性农药    

Determination of 10 polar pesticide residues in tea using ultra performance liquid chromatography and tandem mass
CHEN Hong-ping,LIU Xin,WANG Chuan-pi,WANG Qing-hua,JIANG Ying.Determination of 10 polar pesticide residues in tea using ultra performance liquid chromatography and tandem mass[J].Chinese Journal of Analysis Laboratory,2011,30(8).
Authors:CHEN Hong-ping  LIU Xin  WANG Chuan-pi  WANG Qing-hua  JIANG Ying
Institution:CHEN Hong-ping,LIU Xin,WANG Chuan-pi,WANG Qing-hua and JIANG Ying(Tea Research Institute,Chinese Academy of Agricultural Sciences,Tea Quality and Supervision Testing Center,Ministry of Agriculture.Hangzhou 310008)
Abstract:A method for the determination of 8 carbamate pesticides and 2 neonicotinoid pesticides in green tea,woolong tea,black tea or puer tea by ultra performance liquid chromatography coupled with tandem mass was established.Target pesticides were extracted from samples with acetonitrile after the samples were dipped in water for 15 minutes,then cleaned up by Carbon/NH2 SPE cartridge and eluated with acetonitrile/toluene(3:1 V/V).Analysis was performed using electrospray ionization(ESI) and multi-reaction-monitor...
Keywords:Ultra performance liquid chromatography tandem mass spectrometry  Polar pesticides  Tea  
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