Solid-contact potentiometric sensors based on ion pairs of cetylpyridiniumwith dodecylsulfate and tetraphenylborate for various surfactants

Compositions of active membrane components for solid-contact potentiometric sensors selective to various surfactants were proposed. The stoichiometric ratios of components and the solubility and thermal stability of organic i on-exchangers were estimated. The main electroanalytical parameters of sens ors were determined. Procedures for the potentiometric determination of non ionic surfactants in wastewater, cationic surfactants in hair rinses, and s eparate determination of nonionic and anionic surfactants in shampoos and s ynthetic detergents were developed.