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Determination of nitrate in waters with the nitrate-selective ion electrode
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1970
Year
Added Nitrate-nitrogenEnvironmental ElectrochemistryChemical EngineeringEnvironmental ChemistryEngineeringNitrate-nitrogen ValuesEnvironmental EngineeringPhenoldisulphonic AcidWater MonitoringNitrate-selective Ion ElectrodeWater TreatmentWater QualityAnalytical ChemistryElectrochemical DeionizationElectroanalytical SensorAmmoniaElectrochemistryWater Analysis
An evaluation of the Orion selective-ion nitrate electrode for the determination of nitrate-nitrogen in waters is presented. The results obtained showed that interferences from other anions were not great at levels commonly found in waters. Recovery of added nitrate-nitrogen ranged from 83 to 105 per cent. However, nitrate-nitrogen values obtained by the electrode method on ground and surface-water samples were lower than those obtained by phenoldisulphonic acid and steam-distillation procedures. The specific-ion electrode appeared to be suited for routine analysis of well and surface waters with nitrate-nitrogen concentrations near or above the tolerance limit (10 mg l–1 of nitrate-nitrogen).