离子色谱法在食品分析中的应用研究(5)

时间:2026-01-17

色谱法

西南大学硕十学位论文

andorganicacidincludingfluorideion,chlorideion,bromideion,nitriteion,nitrateion,phosphateion,sulfateionandoxalicacid’malicacidandfumaricacid.METROSEPCARBl(150×4.0mm)wasselectedastheseparationcolumn,10.0mmol/LNaOHwereusedastheeluent

amperometricdetection,separationandpulsedanddeterminationofsugarsincludingarabinose,galactose,glucose,mannoseandfructose.Chineseherbalmedicineingredientswerefastdeterminedeffectively,

satisfied.

NitriteinTeabyIonChromatographyandtheresultsofthedeterminationwereand2.DeterminationofFluoride,Nitrate

Todevelopanionchromatogrammethodfordeterminationof

used鹪thefluoride,nitrateandnitriteintea.METROSEPASupp4-250Wasselectedastheseparationcolumn.On-linedialysisinjection,15mmol/LNa28407and2mmol/LNaHC03were

detection.ThelineareluentwithsuppressedconductivityrangeWas1"-50mg/L,therelativecoefficientWasO.9979--。0.9999,the

1.76%“-2.12%,thedetectionlimitWas0.015-。0.079mg/L,therelativestandarddeviationWaS

recoveryrateswere96.9%--.103.1%.Thismethodpresentsagoodeffectofpretreatmentandchromatographicpeal【separation

methodCallandwithasatisfactoryrecoveryrate,accuracyandoftea.precision.Thisbeappliedtodeterminationofcontentanalysis

determination3.DeterminationofFourKindsofAdditivesinFoodbyIonChromatographyAmethodWasdevelopedfortheofadditivesinfoodincludingbenzoicacid.sorbic

acid,saccharinsodiumandsodiumtripolyphosphatebyionchromatography.SampleWaSpretreatedbydeposition,METROSEPASupp4-250WaSselected嬲theseparationcolumn,15mmoULKOHwereused弱theeluentandsuppressedconductivitydetection.ThedetectionlimitsofO.082"-'0.188mg/Lwereachievedundertheoptimalconditions.Therelativestandarddeviationfortheeightconsecutivedeterminationswere2.10%~2.88%.Theaveragerecoverypercentagesofthesampledetectionwere96.2%~101.1%.Fourkindsofadditiveswerefast

resultsofthedeterminationweresatisfied.determinedeffectively,andthe

4.Determination

AnionofSodiumFormaldehydeSulfoxylateinFoodbyIonChromatographyisdevelopedfordeterminationofsodiumchromatogrammethod

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