茶叶中多种拟除虫菊酯类农药残留量的气相色谱(4)

建设单位工程竣工验收通知书

　　868

酯残留测定方法),GBΠT14929.4294,1994

分析化学第30卷

3　EditorialGroupoftheStateAdministrationforCommodityInspection(国家商检局编写组).TheComprehensiveCompilationof

AnalysesFoodstuffsVol.1(食品分析大全,第一卷).Beijing(北京):HighEducationPress(高等教育出版社),1997:292～

296

4　NieHongyong(聂洪勇),HuangZhiqiang(黄志强).BulletinofAnalysisandTesting(分析测试通报),1992,11(6):50～535　ZhangYing(张　莹),HuangZhiqiang(黄志强),LiYongjun(李拥军).ChineseJ.Anal.Chem.(分析化学),2002,(30)3:

377

DeterminationofPyrethroidsPesticidesMulti2residues

inTeabyGasChromatographyΠMassSpectrometry

LiYongjun,HuangZhiqiang,DaiHua,ZhangYing

(HunanEntry2ExitInspectionQuarantineBureauofthePeople′sRepublicofChina,Changsha410007)

3

Abstract　Anefficientmethodwithmicro2chemistryandsolidphaseextraction(SPE)techniqueforthe

determinationof6pyrethroidspesticideresiduesinteabygaschromatography2massspectrometry(GC2MS)hasbeenestablished.The6pyrethroidspesticideswereextractedfromthesamplewithhexaneΠacetone(1+1,V/V),theextractwascleanedupwithacolumnof3mLsupelcleanEnvi2carbandLC2Alumina2NbymeansofSPE(SUPELCOVISIPREPTM).The6pyrethroidspesticideswereseparatedfromeachotherthroughHP25caapillarycolumn(25m×0.2mm×0.33μm)anddeterminatedbyGC2MS.Therecoveriesrangedfrom84.6%to11511%.Whentheaddedlevelwas0.10～1.00mgΠkg,RSDwere3%～7%(n=5)andthelimitofdetectionwas0.01～0.2mgΠkg.Themethodisrapid,sensitiveandsuitablefortheanalysisofpesticides.Keywords　Pyrethroids,pesticides,tea,solidphaseextraction,gaschromatography2massspectrometry

(Received12June2001;accepted15November2001)