Chemistry: electrical and wave energy – Processes and products
Patent
1985-06-19
1986-03-25
Kaplan, G. L.
Chemistry: electrical and wave energy
Processes and products
204406, 204408, 204412, 204415, G01N 2754
Patent
active
045781540
ABSTRACT:
Two dissolved gas components in sample water, for example, oxygen and hydrogen in core water, are readily quantitatively determined in one and same membrane-type oxygen meter by using a membrane producing an overlapped potential region where a potential region for an oxidation limiting current plateau is overlapped with that for a reduction limiting current plateau between two dissolved gas components, and applying to between a pair of an electrode and a counter-electrode a more positive potential than the equilibrium potential for oxidation-reduction reaction of one of the two dissolved gas components principally, thereby measuring a current generated between the electrodes, and a more negative potential than the equilibrium potential for oxidation-reduction reaction of the other dissolved gas component, when desired, thereby measuring a current generated between the electrodes, and quantitatively determining a concentration of the first dissolved gas component from the latter current quantity and quantitatively determining a concentration of the other dissolved gas component from a difference between the said two current quantities.
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Ibe Hidefumi
Katsura Ryoei
Kitamura Masao
Nakayama Norio
Uchida Shunsuke
Hitachi , Ltd.
Hitachi Engineering Co. Ltd.
Kaplan G. L.
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