Method for analyzing additive concentration

Details Method for analyzing additive concentration Method for analyzing additive concentration

1988-01-25

1990-04-17

Tung, T.

Chemistry: electrical and wave energy

Processes and products

Processes of treating materials by wave energy

204402, 204434, G01N 2746

Patent

active

049177770

ABSTRACT:
A method for determining the effective quantity of an organic additive in an electroplating bath involving passing an inert electrode through a predetermined sequence of voltammetric steps including a step of plating the electrode at a given applied potential, stripping the plated metal at a given applied potential, and conditioning the inert electrode without applied potential; correlating the quantity of additive with the coulombs utilized during the metal stripping step; and using the same predetermined sequence of voltammetric steps for a bath having an unknown quantity of additive.

REFERENCES:
patent: 3904487 (1975-09-01), Lieberman et al.
patent: 3925168 (1975-12-01), Costas
patent: 4132605 (1979-01-01), Tench et al.
patent: 4146437 (1979-03-01), O'Keefe
patent: 4735691 (1988-04-01), Green et al.
Tench et al., "Cyclic Pulse Voltammetric Stripping Analysis of Acid Copper".

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