离子色谱法在食品分析中的应用研究(4)

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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