CAJ | 학술논문

将鲜茶叶粉碎后以正己烷-丙酮为提取溶剂于振荡器上振荡后超声萃取,经活性炭、氟罗里硅土柱色谱净化柱净化后,采用气相色谱-质谱联用法测定茶叶中高效氯氟氰菊酯农药的残留量,得到该方法回收率在92.6%～96.8%之间,相对标准偏差为2.9%～3.2%,方法的最低检出限为0.001mg/kg。该方法测得贵州湄潭地区茶叶样品中高效氯氟氰菊酯农药的最小检出浓度为0.0052mg/kg,远低于我国规定的食品中农药最大残留限量（0.2mg/kg）和欧盟规定的最大残留限量（0.1mg/kg）。
장선다협분쇄후이정기완-병동위제취용제우진탕기상진탕후초성췌취,경활성탄、불라리규토주색보정화주정화후,채용기상색보-질보련용법측정다협중고효록불청국지농약적잔류량,득도해방법회수솔재92.6%～96.8%지간,상대표준편차위2.9%～3.2%,방법적최저검출한위0.001mg/kg。해방법측득귀주미담지구다협양품중고효록불청국지농약적최소검출농도위0.0052mg/kg,원저우아국규정적식품중농약최대잔류한량（0.2mg/kg）화구맹규정적최대잔류한량（0.1mg/kg）。
A method for the determination of pesticide residues in tea by gas chromatography-mass spect rometry is described in this paper.Pesticides were extracted from tea with acetonit rile in anult rasonic bath and purified on a graphitised carbon black column,and then determined by gas chromatography with elect ron ionization mass spect romet ric detection in the selected ion monitoring mode.The recoveries ranged from 92.6 % to 96.8 %..RSD were 2.9 %～3.2 % and the limit of detection was 0.001 mg/kg.The method measured cyhalothrin minimum detectable concentration of pesticides 0.0052mg/kg in the sample tea of Guizhou Meitan,much lower than China＇s maximum residue limits for pesticides in food（0.2mg / kg） and EU MRL（0.1mg / kg）.