Electrochemical measuring cell

Details Electrochemical measuring cell Electrochemical measuring cell

1996-09-13

1998-03-03

Tung, T.

Chemistry: electrical and wave energy

Apparatus

Electrolytic

204412, 2057825, 205783, G01N 27404

Patent

active

057230366

ABSTRACT:
The invention is directed to an electrochemical measuring cell 1 for detecting different gas components. The electrochemical measuring cell includes several measuring electrodes (8, 12, 13), a common counter electrode 21 and a common reference electrode 20 in an aqueous electrolyte 3. The measuring electrodes each include a diffusion membrane (7, 11) and individual diaphragms (9, 14) limiting the inflow of gas to the individual measuring electrodes (8, 12). The diffusion membranes (7, 11) cover the measuring electrodes (8, 12, 13). The measuring cell 1 is so improved that the selectivity of the detection of different gas components is improved. An electrolyte barrier 19 is provided at least between one of the measuring electrodes 8 and the remaining measuring electrodes (12, 13). The electrolyte barrier 19 prevents lateral diffusion within the diffusion membrane (7, 11).

REFERENCES:
patent: 3855096 (1974-12-01), Bergman
patent: 4172770 (1979-10-01), Semersky et al.
patent: 4377446 (1983-03-01), Albery
patent: 5298146 (1994-03-01), Braden et al.

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