ISSN 1017-2548(Print)
ISSN 2234-8530(Online)
Volume 40, Number 5
JKCSEZ 40(5)
October 20, 1996 

Electrochemical determination of iodide was carried out by stripping voltammetry with a (Cin)Cu(NO3)2 modified-carbon paste electrode. Iodide was coordinated onto the electrode surface containing (Cin)Cu(NO3)2 via ion exchange. The oxidation peak potential of incorporated iodide was ＋0.72 V. The optimum analytical conditions for the determination of iodide were investigated using linear sweep voltammetry. Optimum conditions for the electrochemical determination of iodide were as follows: i) A predeposition solution was 0.1 M KNO3. ii) The deposition time was 10 min. iii) The composition of the electrode was 40% (w/w). The detection limit for iodide was 1.0×10^-6 M and the relative standard deviation was ±5.5% in 2.0×10^-5 M(four repetitions). The interference effect of other anions were also investigated. Cl-, Br-, C₂O₄^2-, and ClO4- ions do not interfere for the determination of iodide. When SCN- was added to the deposition solution, the oxidation peak current of iodide ion was decreased roughly 32%.