Dynamic precious metal assay method

Details Dynamic precious metal assay method Dynamic precious metal assay method

1987-03-31

1989-01-24

Niebling, John F.

Chemistry: electrical and wave energy

Processes and products

204434, 204406, G01N 2726

Patent

active

047999993

ABSTRACT:
The invention describes a method for determining the assay of gold alloy. It utilizes a dynamic electrochemical process. The specimen gold is wetted by a described electrolyte, and a small current anodizes the surface of the specimen for a metered period of time. A potential sensing device is then applied to the charged surface, and a potential decay is observed. The potential decay information is compared with empirical data and by interpolating said potential decay with the empirical data a determination of the karat quality of the gold alloy may be determined. This same method may be used for other precious metals, employing different electrolytes, empirical standards, and potentiometers.

REFERENCES:
patent: 2531747 (1947-06-01), Stearn
patent: 3282804 (1966-11-01), Stearn
patent: 4179349 (1979-12-01), Park
patent: 4240892 (1980-12-01), Riggs
patent: 4376027 (1983-03-01), Smith
Encyclopeadia Hebraica, pp. 779-786.

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