抄録
As a method of estimating the concentration of chlorine dioxide in air, potential of chlorine-dioxide-gas-electrode in chlorite solution was measured : ClO2+e→ClO2-; E=Eo+RT/nF(PClO2/AClO2-).
Keeping the active amount of ClO2- constant, the relation between electrode potential and logarithm of partial pressure of ClO2 could be expressed in a straight line under constant temperature. In order to keep the active amount of ClO2- constant, a saturated solution of hardly soluble chlorite, such as of lead or silver chlorite, was used. By bubbling chlorine dioxide gas around the platinum electrode immersed in the above solution, satisfactory results were obtained.
Further attempts were made to apply this method for an industrial use, and a continuous indicator of the chlorine dioxide gas concentration in air was successfully constructed.
