Poly(N-methylpyrrole) films doped with iron-substituted heteropolytungstates: a new sensitive layer for the amperometric detection of nitrite ions

Abstract

The immobilisation of iron-substituted heteropolytungstates [(H₂O)Fe^IIIXW₁₁O₃₉]^n–(X = P, n= 4; X = Si, n= 5) in poly(N-methylpyrrole) films deposited on an electrode surface provides a sensitive assembly for the electrochemical detection of nitrite.