Bakır (II) tayininde yeni titre edicilerin kullanılması
Abstract
This study was carried out to developed a new complexometric titration method for the determination of copper. For this purpose, the standard solution of copper(II) (10"3 M- 10"5 M) were potentiometrically titrated using N, N'-disalicylidene-l,3-diaminopropane (Schiff base) as titrant and copper(II)-selective electrode for end-point indication in both ammonium acetate and ammonia-ammonium chloride buffer media. The stoichiometry of the titration reaction and interferences of some metal ions on the titration of copper were discussed. There was a good agreement between the results obtained by the proposed titration method and EDTA titration method. The accuracy and precision of Schiff base method were tested by five successive determinations both on the standard solutions of copper(U) and the standard reference materials. The results indicated that the percentage of copper in alloys could be safely determinated by using Schiff base method without interference from other many metal in alloys.Key Words: Copper, Schiff base, titration, copper(II)-ion selective electrode