Patent ID: 6673226
Filing Date: 2004-01-06
Classification: C25D,G01N,Y10T

Abstract:
A method for determining the concentration of a halide ion in an unknown solution, comprising the steps of:measuring a copper electrodeposition rate parameter for a copper electrodeposition solution comprising copper ions, an anion, an acid, and at least one organic additive selected from the group consisting of suppressor, anti-suppressor and leveler; measuring the copper electrodeposition rate parameter for a test solution comprising the copper electrodeposition solution and a known volume fraction of the unknown solution; measuring the copper electrodeposition rate parameter for at least one calibration solution comprising the copper electrodeposition solution and a known concentration of the halide ion; and comparing the copper electrodeposition rate parameters measured, in said steps of measuring, for the copper electrodeposition solution, the test solution, and the calibration solution to determine the concentration of the halide ion in the unknown solution.