CONCENTRATION MEASUREMENT OF FLUORINE IN ZINC ELECTROLYTE

摘要

PROBLEM TO BE SOLVED: To directly analyze the fluorine concn. for the purpose of shortening an analysis time and simplifying analysis operation. ;SOLUTION: At least two samples are prepared by adding fluorine to a zinc electrolyte in a predetermined amt., and after citrate and EDTA are added to respective samples, the pH of the specimens is adjusted to 8.0±0.5. PH is also adjusted in a case of the zinc electrolyte to which no fluorine is added, and the potential differences of the respective specimens are measured to measure the change quantity (ΔE) of the potential differences to measure the concn. of fluorine in the electrolyte.;COPYRIGHT: (C)1999,JPO