A Chloride Ion-Selective Solvent Polymeric Membrane Electrode Based on a Hydrogen Bond Forming Ionophore

摘要

A chloride-selective solvent polymeric membrane elec- trode based on a neutral hydrogen bond forming iono- phore, poly(vinyl chloride)(PVC), the plasticizer 2-nitro- phenyl octyl ether(0-NPOE), and cationic sites(50 mol (/100, relative to the ionophore) is described. At pH 7.0 (HEPES buffer), this electrode responds to chloride in a linear range from 10~-5 to 10~-2 M with a slope of (-54.0 +-1.0) mV/decade and a detection limit of (6.5+-3.0)* 10~-6 M.