Phosphate‐imprinted polymer as an efficient modifier for the design of ion‐selective electrode

Abstract

BACKGROUND In this study, the ion‐selective electrode (ISE) based on ion‐imprinted polymer (IIP) for the determination of phosphate has been described. For selective recognition of IIP, phosphate (analyte–template), chitosan and N‐(2‐aminoethyl)‐3‐aminopropyl‐trimethoxysilan (AAPTS) (functional monomers), ephychlorohydrin and tetraethoxysilicate (TEOS) (cross‐linking agents) were used. RESULTS The electrode was prepared using the IIP. The IIP‐1‐, IIP‐2‐ and IIP‐3‐based membranes showed a detection limit of 7.6 × 10−6, 5.1 × 10−6 and 2.5.10−7 mol L−1, respectively. Attractive features of these IIP‐based ion‐selective electrodes are a rather low detection limit and high selectivity compared with other phosphate molecules. CONCLUSION The proposed method has been applied successfully to analyze phosphate in household waste samples with recoveries of ≥90%. © 2021 Society of Chemical Industry (SCI).

New Materials Used for the Development of Anion-Selective Electrodes—A Review

“…The last type of electrodes described was PO 4 3− -ISEs, which are presented in [94]. All three electrodes were made up of Cu wire immersed in an internal electrolyte of 0.001 M KCl + 0.001 M Na 3 PO 4 .…”