Chemistry: electrical and wave energy – Processes and products – Processes of treating materials by wave energy
Patent
1991-05-16
1993-03-09
Niebling, John
Chemistry: electrical and wave energy
Processes and products
Processes of treating materials by wave energy
204402, 204434, G01N 2726
Patent
active
051924030
ABSTRACT:
A cyclic voltammetric method for measuring concentrations of subcomponents of additive mixtures, comprising the steps of: (a) preparing a basis solution which contains all of the components of an unknown solution to be measured, except a component of interest; (b) preparing a calibration solution which contains the component of interest in a known concentration near that which would be expected in the unknown solution; (c) adding measured amounts of the calibration solution to a first defined volume of the basis solution and plotting a first cathodic charge against the added volume of the calibration standard; (d) adding measured amounts of the unknown solution to a second volume of the basis solution and plotting a second cathodic charge against the added volume of the unknown solution; and (e) comparing the slopes of the first and second curves to determine the concentration of the component of interest in the unknown solution.
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"Take the guesswork out of plating bath control", ECI Technology, ECI Technology, Copyright 1989.
Chang I-Chia H.
Horkans Wilma J.
Bell Bruce F.
International Business Machines - Corporation
Niebling John
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