Langmuir 2000, 16, 9555-9558
9555
Preparation and Properties of Coated-Wire Ion-Selective Electrodes for Anionic and Cationic Surfactants R. Xu and D. M. Bloor* Division of Chemical Sciences, University of Salford, Salford, M5 4WT, United Kingdom Received July 6, 2000. In Final Form: September 4, 2000 Surfactant ion-selective electrodes, prepared by coating silver wire with a suitably conditioned electroactive poly(vinyl chloride) polymer, have been found to show an excellent Nernstian response to both anionic (sodium dodecyl sulfate) and cationic (tetradecyltrimethylammonium bromide) surfactants. When conditioned to a specific surfactant, electromotive force data show a much larger response range to lower surfactant concentrations (
