Chemistry: electrical and wave energy – Processes and products – Processes of treating materials by wave energy
Patent
1992-11-17
1994-06-14
Niebling, John
Chemistry: electrical and wave energy
Processes and products
Processes of treating materials by wave energy
204402, 204412, 204434, 204435, G01N 2726
Patent
active
053207246
ABSTRACT:
A method of monitoring a plating bath which combines ac and dc voltammetry to accurately measure major and trace constituent concentrations. The method involves applying both ac and dc voltammetric signals to a pretreated electrode in contact with the plating bath solution, measuring the ac and dc response current spectra, and comparing the resultant spectra to determine which provides maximum spectral detail for monitoring particular constituents with minimum interference from other constituents. Then, the ac and dc response current spectra are each used to monitor the particular constituents for which each provides the best accuracy. The method complements and is easily integrated with known voltammetric techniques and equipment.
REFERENCES:
patent: 4631116 (1986-12-01), Ludwig
Eliash Bruce M.
Ludwig Frank A.
Phan Nguyet H.
Reddy Vilambi N. R. K.
Bell Bruce F.
Denson-Low W. K.
Hughes Aircraft Company
Lachman M. E.
Niebling John
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