Chemistry: electrical and wave energy – Apparatus – Electrolytic
Patent
1982-12-14
1984-04-03
Kaplan, G. L.
Chemistry: electrical and wave energy
Apparatus
Electrolytic
204415, 204419, 324438, 128635, G01N 2730, G01N 2746
Patent
active
044406207
ABSTRACT:
A measuring electrode device comprises a pH electrode arranged within an outer casing and having a pH sensitive member in contact with an electrolyte housed in the outer casing. The electrolyte reacts with a predetermined gas in a liquid to be inspected and varies its pH. The pH sensitive member includes a semiconductor substrate and a pH sensitive membrane formed on the substrate and in contact with the electrolyte. The pH sensitive membrane is formed of at least one element selected from the group consisting of silicon nitride, aluminum oxide and tantalum pentoxide. A potential difference is produced between the pH sensitive membrane and the electrolyte in accordance with the variation of the pH of the electrolyte. Thus, a potential difference is produced between the pH electrode and a reference electrode according to the variation of the pH of the electrolyte.
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Kamiyama Takashi
Ono Noriaki
Kaplan G. L.
Nguyen Nam X.
Olympus Optical Co,. Ltd.
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