离子色谱法在食品分析中的应用研究(5)
时间:2026-01-17
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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