Hydrogen peroxide concentration detector and hydrogen peroxide concentration detection method

摘要

PROBLEM TO BE SOLVED: To extend the service life. SOLUTION: The working electrode 21 is provided with at least a part immersed in an electrolyte solution 11 containing hydrogen peroxide, and a voltage is applied to the working electrode 21 to measure the current value of the electrolytic reaction of the working electrode 21. A hydrogen peroxide concentration detecting device 1 for detecting the concentration of hydrogen peroxide, the working electrode 21 is configured by coating the surface with a catalyst metal 212 having a platinum atom, and the working electrode 21 is 0.9 V or less. A voltage is applied to generate a reduction reaction of hydrogen peroxide, and the reduction current value of the reduction reaction is measured to detect the concentration of hydrogen peroxide. [Selection diagram] Fig. 1