Electroanalysis · 1994 · 31 citations · 7 references
Liquid Membrane ElectrodeEngineeringSurfactantsElectrodialysisChemistryChemical EngineeringAnionic SurfactantsMercurated PolystyreneAnalytical ChemistryAnion SensingMembrane TechnologyChemical SensorCation SensingPolymer ChemistrySurfactant SolutionIon ExchangePolymer MembraneElectrochemistryChemical Enhanced Oil RecoveryWater PurificationIndicator ElectrodeElectroanalytical Sensor
Abstract An electrode that employs a solution of mercurated polystyrene in 1,1′,2,2′ tetrachloroethane as the sensor in a liquid‐state membrane has been developed. The electrode was tested toward some common anions, anionic surfactants, and soaps. This electrode displays an unusually high level of selectivity for anionic surfactants, in particular to bis(2‐etylhexyl)sodium sulfosuccinate, sodium dodecylbenzenesulfonate, and sodium dodecylsulfate, over many common anions, such as NO , ClO F − , Cl − , and Br − . The electrode may find application in the analysis of surfactants, as an indicator electrode in the potentiometric titration and in the physicochemical studies of surfactant solutions.
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