Patent ID: 6808611
Filing Date: 2004-10-26
Classification: C25D,G01N

Abstract:
An electro-analytical method for determining the concentration of an organic additive of interest in a plating bath, having an unknown conformation including the organic additive and a suppressing agent to affect the quality of a metal to be plated, using an organic chemical analyzer operating on the basis of an electro-analytical principle, comprising:preparing a supporting-electrolyte solution, comprising a virgin make up solution of all inorganic substances of the plating bath, trace amounts of the organic additive of interest, and excess amounts of the suppressing agent of the plating bath; preparing a testing solution, comprising the supporting-electrolyte solution and a production solution, wherein the production solution comprises a portion of the plating bath; measuring an electrochemical response of the supporting-electrolyte solution and the testing solution using the organic chemical analyzer; and determining the concentration of the organic additive of interest in the plating bath from the electrochemical response measurements.