Electrolysis: processes – compositions used therein – and methods – Electrolytic analysis or testing – For corrosion
Patent
1996-05-20
1998-06-23
Bell, Bruce F.
Electrolysis: processes, compositions used therein, and methods
Electrolytic analysis or testing
For corrosion
205787, 205793, 205789, 2057895, 204409, 204416, 204418, 204431, 422 681, 422 69, 422 70, 422 8201, 422 8202, 422 8203, 422 8204, G01N 2726
Patent
active
057700389
ABSTRACT:
A method for detecting and identifying a chemical substance in various phases such as a vapor phase and a liquid phase. The chemical substance being measured is diffused into a predetermined phase. Then, an electric state at an electrode existing in the predetermined phase is detected as a change with time based on the diffusion and absorption of the chemical substance on the electrode. A pattern of the change of the electric state with time is prepared. A fitting function based on the pattern is set and parameters of the chemical substance being measured are found. A distance between the parameters of the chemical substance being measured and parameters of the reference substance which is detected is determined. In the case of a detection of a chemical substance in a liquid phase, before detecting the electric state at the electrode existing in the liquid phase, a predetermined electrolytic solution is supplied around the electrode to stabilize the electric state of the electrode and then the liquid phase containing the chemical substance being measured is supplied to the electrode.
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Iseki Masahiro
Iwama Akifumi
Nakagawa Azusa
Sugiyama Yukihiro
Bell Bruce F.
Sanyo Electric Co,. Ltd.
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