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1、05食品检验概述(05foodinspectionoverview)Nearly50%ofthetestswereperformedbyUVVisspectrophotometry.Themostimportantfeatureofthismethodisthattheinstrumentissimpleandeasytooperate・Theexaminationofinorganiccomponentsinfoodplaysanimportantroleinfoodsafetyinspection.
2、Mercurydetermination,forexample,hasbeenaparticularconcernforthegovernmentandthepublic・BecauseMercuryiseasilytransportedinorganisms,itcanbeaccumulatedinwaterbodies.Mercuryentersthehumanbody,especiallyafterenteringthehumanbrain,almostcannotbedischarged,acc
3、umulatedtoacertainextent,itwillcausepoisoning,damagethecentralnervoussystem・Theanalysisofmercuryisusuallydonebyatomicabsorptionspectrometryoratomicfluorescencespectrometry.Theanalysisoforganiccomponentsisusuallydonebygaschromatographyorhighperformanceliq
4、uidchromatographyandmolecularspectroscopy.Thedeterminationofpesticideresidues,suchasorganochlorine,benzo(a)pyrene,pyrethroid,organicphosphorus,etc・,hasattractedwidespreadatterition.Chromatographyisaveryeffectivemethodforseparationofmixturesandidentificat
5、ionofcompounds・Itcannotonlyidentifycompounds,butalsoaccuratelydeterminethecontent,andtheoperationisrelativelyconvenient.Ithasthecharacteristicsofhighseparationefficiency,fastanalysis,highsensitivity,accuratequantitstiveresultsandeasyautomation,soithasbee
6、nwidelyusedintheexaminationoforganiccomponents・Infraredspectroscopyiswidelyusedinmolecularspectroscopy.Ingeneral,infraredspectroscopycombinedwithotheranalyticalmethodssuchasRamanspectroscopycanbeusedasthemainmeansforidentificationofcompoundsanddeterminat
7、ionofmolecularstructure・Four,developmentdirectionInChina,foodinspectioncontinuestodevelop・Itsdevelopmentdirectionhasthefollowingaspects:1.theuseofnewlarge-scaleinstrumentsandequipment.Withthedevelopmentofmodernscientificinstruments,largeanalyticalinstrum
8、entshavebeenwidelyused,suchasorganicmassspectrometry,inorganicmassspectrometryandXrayfluorescencespectrometer・Amongthem,Xrayfluorescencespectrometryisanon-destructiveanalysismethodandhasdevelopedrapidly.Hyphenatedtechnique
