Transcription of Ion chromatography analysis methods and issues
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Ion chromatography analysis methods and issues
Slide #Ion ChromatographyAnalysis methods and IssuesJim KrolSr Applications Chemist for Ion AnalysisWaters CorporationFeb/Mar 2000 Slide #You Have a Choice forIon AnalysisIon AnalysisOptionsIonChromatographyCapillar y IonAnalysisSingle ColumnICChemicalSuppression ICSlide #Ion ChromatographyHardware Configuration OptionsConductivityDetectorAnion ExchangeColumnCIAC onductivityDetectorSuppressorModuleCondu ctivityDetectorSuppressorModulePhotodiod eArrayDetectorIon ExchangeColumnIon ExchangeColumnChromatographyManagerGradi entPumpAutosamplerGradientPumpAutosample rIsocraticPumpManualInjectorData SystemSlide #What Are Ions?Any chemical species that carries a electrical charge -Soluble in water -Exhibit conductivity in solutionExample: NaCl + H20 Na+ + Cl- + H2 ONa+ = Cation Cl- = AnionorNaH2PO4 + H2O Na+ + 2H+ + PO4-3 Slide #Importance of pH and pKaIons can exist in solution in a number of different formsDepending on pH of the solution and pKa of the ionH3PO4 H+ + H2PO4-1 pKa = H+ + HPO4-2 pKa = H+ + PO4-3 pKa = = -log [H+]pKa = the pH where the speci
Slide # Ion Chromatography Analysis Methods and Issues Jim Krol Sr Applications Chemist for Ion Analysis Waters Corporation Feb/Mar 2000
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