Electrochemical method for determining a quantity of an organic component in an electroplating bath

摘要

Determining a quantity of organic component in a electroplating bath involves passing working electrode in the bath samples containing a known/unknown and different quantity of an organic component through a surface optimization step comprising galvanostatic, voltametric steps by cycles or pulses and/or open circuit steps for less than 20 seconds. The method also involves preparing a calibration curve by plotting the charge passed during a metal plating or metal stripping step of the sequence versus the concentration of the organic component being sought; measuring the charge passed during the metal plating or the metal stripping step for unknown sample; and comparing the results to determine the amount of the organic component present in unknown sample. The surface optimization step includes an applied potential sufficient to remove residual halide from the working electrode. Independent claims are also included for methods for determining an amount of brightener in a bath.