Determination of Heavy Metals and Iodide by Stripping Voltammetry in Sodium Chloride on Mercury-Graphite Electrodes

作者：Demin V A^*; Kamenev A I; Zveryak N P; Zarembo V I

来源：Journal of Analytical Chemistry, 2010, 65(1): 87-90.

DOI：10.1134/S1061934810010168

The behavior of Cd(II), Pb(II), Cu(II), and I(-) in the aqueous solutions of sodium chloride is studied by stripping voltammetry. A new version of using an indicator electrode from carbon glass ceramics modified with mercury for the consecutive stripping determination of Cd(II), Pb(II), Cu(II), and iodide is proposed. The mercury-graphite electrode was formed in the solution of a supporting electrolyte based on NH(4)Cl, HCl, 0.05 M potassium tetraoxalate (KH(3)C(4)O(3) center dot 2H(2)O), and 5 x 10(-5) M mercury(II). At first, Cd(II), Pb(II), Cu(II), and then iodide were determined by anodic-cathodic stripping voltammetry after adding a sample solution (table salt, 10-100 mg/mL NaCl).

• 出版日期2010-1