离子色谱法在食品分析中的应用研究(4)
时间:2026-01-17
时间:2026-01-17
色谱法
A19Stract
ApplicationStudiestotheDeterminationof
foodSamplesbyIonChromatography
Speciality:AnalyticalChemistry
Postgraduate:QuJing
Mentor:Prof.ZhouGuangming
ABSTRACT
ICbasedonthoeryofionexchangeandICisonekindofLCmethodswhichisusedtodetectnegionandcationinsolution.Ithasbeendevelopedrapidlysmceinventedin1975
inspheresofenvironmentandwidelyusedmonitor,agriculture,biology,pharmacy,industryandfoodbecauseofsimplicity,quickness,hi曲sensitivityandselectivity.ICmarkedbysimultaneousdeterminationofmulti-componenthasbecametheideallymethodfordetectingnegion
playaveryimportantrole
nutritionoffoodingredients
morefrequentlyintheandion-typecompoundanditofhygieneandsecurityresearchthatbearingthesignificanceandadditives.Recently,ICasanofficalstandardmethodisintoducedandfoodanalysisbyIChasbeenoneofthemainapplication.
Thisthesiscontainstwo
applicationoffoodsections.OneisreviewrelatedtodevelopmentofICdetectionandanalysis.Theotherisresearchreportwhichiscomposedasfollows:1)IonChromatographyintheapplicationoff00dcompositionanalysis.First,ICmethodforherbsisstudied,suppressedconductivitydetectorandpulsed
inorganicamperome仃icdetectorareintroducedtodetectanionsandorganicacidandwater-solublecarbohydrateinherbs.Secondly,appoachtodetectfluoride,nitrateandnitriteinteaandteabeverageiSstudied.2)AplicationofICinthesecurityoffoodadditives.First,themethodofsimultaneouslydeterminationofbenzoicacid,sorbicacid,saccharinsodiumandsodiumtripolyphosphateisestablished.Secondly,thecontentofsodiumformaldehydesulfoxylateinf00disdetectedbysuppressedconductivitydetector,theomcomesshowsatisfactory.
1.StudyonDeterminationofChineseHerbalMedicineIngredientsusingIonChromatography
wasoptimizedfordeterminationofinorganic
Supp4—250WasselectedHigh-performanceanion-exchangechromatographyanions,organicacidandsugarsinChineseherbalmedicine.METROSEPA
astheseparationcolumn,1.8mmol/LNa2C03,1.7mmolFbNaHC03and2%acetonewereusedastheeluentandsuppressedconductivitydetection,separationanddeterminationofinorg
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