食品中4,4’-二硝基均二苯脲残留量的前处理方法比较-豆柴文库

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食品中4,4’-二硝基均二苯脲残留量的前处理方法比较
Title:Pre-treatmentMethodsforDeterminationofResidual4,4’-DinitrocarbanilideinFood:AComparativeStudy
Abstract:
Thepresenceofpesticideresiduesinfoodhasraisedconcernsoverfoodsafetyandhumanhealth.Onesuchresidualcompoundis4,4’-Dinitrocarbanilide(DNC).Thispaperaimstocomparethepre-treatmentmethodsforthedeterminationofresidualDNCinfood.Thevariouspre-treatmentmethodsdiscussedincludeextractiontechniques,clean-upmethods,anddetectiontechniques.Thepaperconcludesbyhighlightingtheimportanceofthesepre-treatmentmethodsinensuringaccurateanalysisofDNCresiduesinfoodsamples.
Introduction:
Theuseofpesticidesinagricultureiscrucialtoprotectcropsfrompestsanddiseases.However,theresiduesofthesepesticidescanpersistonfoodproducts,leadingtopotentialhealthrisksforconsumers.4,4’-Dinitrocarbanilide(DNC)isonesuchpesticidecompoundthatiswidelyusedinthecontrolofpests.
Toensurefoodsafety,itiscrucialtoaccuratelydeterminetheresidualDNClevelsinfoodproducts.However,theanalysisofDNCinfoodsamplescanbechallengingduetothecomplexmatrixoffoodandthelowlevelsofresiduespresent.Therefore,pre-treatmentmethodsarenecessarytoextractandclean-upthesamplesbeforeanalysis.
Pre-treatmentMethods:
1.ExtractionTechniques:
a.QuEChERS(Quick,Easy,Cheap,Effective,Rugged,andSafe):ThismethodinvolvestheextractionofDNCusinganorganicsolvent,followedbyaclean-upstepusingdispersivesolid-phaseextraction(dSPE).
b.Solid-phasemicroextraction(SPME):Thistechniqueutilizesafibercoatedwithanadsorbentmaterialtoextractanalytesfromthesamplematrix.
c.Acceleratedsolventextraction(ASE):Thistechniqueuseshigh-pressureandhigh-temperatureconditionstoextractDNCfromthesamplematrix.
2.Clean-upMethods:
a.Solid-phaseextraction(SPE):ThistechniqueinvolvestheretentionofDNConasolid-phasesorbentwhileinterferingcompoundsareeliminated.
b.Gelpermeationchromatography(GPC):ThismethodseparatesDNCfromotherco-extractedcompoundsbasedontheirmolecularweightandsize.
3.DetectionTechniques:
a.Gaschromatography(GC):Thistechniqueiscommonlyusedfortheanalysisof