Potentiometric Sensors for the Determination of Anionic Surfactants - A Review

Anionic surfactants are important components of many products used in everyday life in all households. They are also applied in various industrial fields at a very large scale. Since they have a negative influence on the environment, it is an imperative to monitor their concentration in aquatic ecosystems. Therefore, it is of great importance to develop new methods for the determination of a wide spectra of anionic surfactants in complex environmental samples in a short time. A comprehensive review of potentiometric sensors for the determination of anionic surfactants in the last 50 years is given with special concern to papers published since 2000, but noting some earlier published important papers. The latest development in use of new ionophores, polymer formulations, and nanomaterials is presented. Additionally, the application of new potentiometric sensors in batch mode or in miniaturized microfluidic methods is discussed.

Automated summary

This article reviews the potentiometric sensors used for the determination of anionic surfactants over the past 50 years, highlighting the latest technological developments and application methods while emphasizing the importance of rapid determination of anionic surfactant concentrations in complex environmental samples.