Apparatus for use in rapid and accurate controlled-potential cou

Details Apparatus for use in rapid and accurate controlled-potential cou Apparatus for use in rapid and accurate controlled-potential cou

1979-08-23

1981-01-13

Tung, T.

Chemistry: electrical and wave energy

Processes and products

Vacuum arc discharge coating

204 1T, 204195T, G01N 2746

Patent

active

042448000

ABSTRACT:
An apparatus for controlled-potential coulometric analysis of a solution includes a cell to contain the solution to be analyzed and a plurality of electrodes to contact the solution in the cell. Means are provided to stir the solution and to control the atmosphere above it. A potentiostat connected to the electrodes controls potential differences among the electrodes. An electronic circuit connected to the potentiostat provides analog-to-digital conversion and displays a precise count of charge transfer during a desired chemical process. This count provides a measure of the amount of an unknown substance in the solution.

REFERENCES:
patent: 3498888 (1970-03-01), Johansson
patent: 4003705 (1977-01-01), Buzza et al.
Brown, "J. Phys. E." (GB), vol. 5, No. 4, (Apr. 1972), pp. 365-368.
Karlsson et al, "Talanta", vol. 18, pp. 459-465, No. 5 (1971).
Holland et al, "Analytical Chemistry", vol. 50, pp. 236-240 (1978).

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