New Potentiometric Sensors Based on Ionic Associates of Sodium Dodecylsulfate and Cationic Complexes of Copper(II) with some Organic Reagents

Abstract

New potentiometric sensors with polymeric plasticized membranes based on ionic associates of sodium dodecylsulfate (DDS) and cationic complexes of copper(II) with some organic reagents (1,10‐phenanthroline (Phen), N,N′‐bis(salicylidene)ethylenediamine (Salen), α,α′‐dipyridyl (Dipyr) were developed for quantitative determination of homologous sodium alkylsulfates in a wide concentration range 2.0×10−7 (5.0×10−7)–1.0×10−2 (5.0×10−4) M. The low detection limit of DDS was 1.0×10−7 M (28.8 μg/L). The electrodes demonstrated good and extremely stable response to sodium alkylsulfates and were successfully applied to determination of anionic surfactants in water solutions, technical raw preparations, detergents, cosmetic and cleaners.

A PVC‐Membrane Cationic Surfactant Sensitive Potentiometric Sensor: Potentiometric Determination of Dodecyltrimethyl Ammonium Ion

“…[4,[22][23][24][25][26][27][28] Many surfactant sensors typically consist of a liquid membrane-type sensor, including an ionophore, high molecular weight PVC, and a plasticizer. [29,30] The ionophore serves as the sensing material and is generally responsible for selective interaction with the surfactant counter-ion and for the formation of the ion-pair. The ideal ionophore should possess certain properties, including high stability and very low solubility, which consequently results in high sensitivity.…”

“…Many surfactant sensors typically consist of a liquid membrane‐type sensor, including an ionophore, high molecular weight PVC, and a plasticizer [29,30] . The ionophore serves as the sensing material and is generally responsible for selective interaction with the surfactant counter‐ion and for the formation of the ion‐pair.…”

The 1,3-Dioctadecyl-1H-imidazol-3-ium Based Potentiometric Surfactant Sensor for Detecting Cationic Surfactants in Commercial Products

“…These devices can be divided into solid-state [ 9 ] and liquid membrane-type potentiometric sensors [ 10 , 11 ], which contain an ion-pair (ionophore) sensing element in the PVC-based liquid membranes. The ionophore is incorporated into the sensing membrane together with a plasticizer and a PVC [ 12 , 13 , 14 ]. Predicting the end-point break and modelling the titration system represents an additional challenge in the development of efficient surfactant sensors [ 14 , 15 ].…”

Direct Potentiometric Study of Cationic and Nonionic Surfactants in Disinfectants and Personal Care Products by New Surfactant Sensor Based on 1,3-Dihexadecyl−1H-benzo[d]imidazol−3-ium

“…Most surfactant sensors possess a liquid membrane-type sensor composed of an ionophore, a high molecular weight PVC, and a plasticizer [ 17 , 18 ]. The ionophore is the sensing material and is usually responsible for the selective interaction with the surfactant counter-ion and for the formation of the ion-pair.…”