ION CONCENTRATION MEASURING ION SENSOR, ITS MANUFACTURING METHOD, AND ION CONCENTRATION MEASURING DEVICE USING THE SAME

摘要

PROBLEM TO BE SOLVED: To measure selectively and simultaneously hydrogen ion concentration, hydrofluoric acid concentration, metal ion concentration or the like by one measuring apparatus based on one measuring principle. SOLUTION: This ion concentration measuring ion sensor is produced by sulfonating a benzene ring in a transparent plate material or a cell material comprising a copolymer having the benzene ring by concentrated sulfuric acid, and thereafter by chemically-bonding electrostatically the sulfonic acid group with a cation portion of a porphyrin color reagent. This ion concentration measuring device is connected to a measuring instrument using the ion sensor by an optical fiber. COPYRIGHT: (C)2004,JPO