MEASUREMENT OF COMPLEXING AGENT CONCENTRATION IN AN ELECTROLESS PLATING BATH
摘要
<p>The concentration of citrate complexing agent in an electroless cobalt or nickel plating bath is determined by titrating a sample of the electroless plating bath containing a small concentration of free fluoride ion with a standard lanthanum nitrate solution. During the titration, La<SUP>3+</SUP> ion first reacts preferentially with the citrate complexing agent and then with fluoride ion, which reduces the free fluoride ion concentration. The endpoint for the titration is indicated by a substantial decrease in the free fluoride ion concentration, which is detected via a fluoride ion specific electrode (ISE). The method can be used for analysis of other complexing agents.</p>
申请公布号
EP1634069(B1)
申请公布日期
2008.11.19
申请号
EP20040755157
申请日期
2004.06.10
申请人
SHALYT, EUGENE;PAVLOV, MICHAEL;BRATIN, PETER;KOGAN, ALEX;PERPICH, MICHAEL JAMES
发明人
SHALYT, EUGENE;PAVLOV, MICHAEL;BRATIN, PETER;KOGAN, ALEX;PERPICH, MICHAEL JAMES