自动电位滴定法测定辣椒制品中二氧化硫残留量检测条件优化-豆柴文库

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自动电位滴定法测定辣椒制品中二氧化硫残留量检测条件优化
Title:OptimizationofConditionsforDeterminingtheResidualSulphurDioxideinCapsicumProductsbyAutomaticPotentiometricTitration
Abstract:
Sulphurdioxide(SO2)isawidelyusedpreservativeinthefoodindustry,includingintheproductionofcapsicumproducts.However,excessivelevelsofSO2canposehealthriskstoconsumers.Therefore,theaccuratedeterminationofresidualSO2incapsicumproductsisofgreatimportance.ThisstudyaimedtooptimizetheconditionsformeasuringtheresidualSO2incapsicumproductsusinganautomaticpotentiometrictitrationmethod.
Introduction:
Capsicumproducts,suchashotsaucesandchilipowders,arewidelyconsumedglobally.Theproductionprocessofteninvolvestheuseofsulphurdioxideasapreservativetoensureshelfstabilityandpreventmicrobialgrowth.However,excessivelevelsofSO2canleadtoadversehealtheffects,suchasrespiratoryproblemsandallergicreactions.Therefore,itiscrucialtoaccuratelydeterminetheresidualSO2levelsincapsicumproducts.
Methods:
Theautomaticpotentiometrictitrationmethodwaschosenforthisstudyduetoitsprecisionandsimplicity.Thekeyparameterstobeoptimizedincludesamplepreparation,titrationconditions(e.g.,choiceoftitrantandconcentration),andendpointdetermination.
ResultsandDiscussion:
1.SamplePreparation:Differentextractionmethods(e.g.,directextraction,acidhydrolysis)wereevaluatedtodeterminethemostefficientmethodforrecoveringtheSO2fromcapsicumproducts.ItwasfoundthatacidhydrolysisusingpotassiumchlorideandhydrochloricacidastheextractingsolutionyieldedthehighestrecoveryofSO2.
2.TitrantSelection:Varioustitrants,suchasiodine,hydrogenperoxide,andcerium(IV)sulfate,weretestedtodeterminethemostsuitableoption.Itwasobservedthatcerium(IV)sulfate(0.1M)providedthemostaccurateandreliableresultsforthedeterminationofSO2.
3.TitrantConcentration:Theconcentrationofthecerium(IV)sulfatetitrantwasoptimizedtoobtainthebestsensitivityandprecision.Itwasfoundthataconcentrationof0.1Mprovidedoptimalresultsintermsofsensitivityandaccuracy.
4.EndpointDetermination:Differentindicators,includingstarch,potassiumper