New Modified Electrodes for the Separate Determination of Polyoxyethylated Nonylphenols

Electrochemical systems and ionophore compositions for solid-state nonionic surfactant-selective electrodes (NS-SEs) were proposed. The main electrochemical and performance characteristics of nonionic surfactant sensors were determined. It was demonstrated that surfaces of NS sensors can be modified with polyvinyl chloride molecular sieves. It was found that the modified electrodes provide the separate determination of polyoxyethylated nonylphenols differing in the number of oxyethyl groups.