ANION SENSOR

摘要

The present invention announces a method for extending the storage life of a test reagent for quantification of ionic components in samples by using an anion sensor. The purpose of the present invention is to provide an anion sensor, wherein the storage life of the anion sensor itself may be extended, to thereby extend the storage life of the anion sensor beyond that of conventional anion sensors. According to the present invention, through adjustment of the pH of the internal solution (internal gel liquid), it is possible to provide an anion sensor that maintains consistent performance, and has longer storage life.

主权项

1. An anion sensor comprising:
an ion electrode membrane obtained by performing coating treatment on a membrane containing a compound which has a cation, with a material containing a compound which has an ionization group of predetermined pKa; an internal solution accommodation portion which is disposed so as to enable contact of a portion or the entirety of a first surface of the ion electrode membrane with a sample and accommodates an internal solution so as to come into contact with a portion or the entirety of a second surface of the ion electrode membrane; and an electrode provided so as to come into contact with the internal solution accommodated in the internal solution accommodation portion, wherein the ion electrode membrane, the internal solution accommodation portion, and the electrode are disposed in a container, the internal solution contains NaCl or KCL, and a pH buffer solution, and pH of the internal solution is adjusted so as to be equal to or greater than pKa of the compound having the ionization group.