Collect. Czech. Chem. Commun. 2008, 73, 97-106
Adsorptive Stripping Voltammetric Determination of 1,1-Dimethyl-3-phenyltriazeneLjubiša M. Ignjatovića,*, Jiří Barekb, Jiří Zimab and Milica C. Stevića
a Faculty of Physical Chemistry, University of Belgrade, P.O. Box 47, 11 158 Belgrade, Serbia
b UNESCO Laboratory of Environmental Electrochemistry, Department of Analytical Chemistry, Faculty of Science, Charles University, Hlavova 2030, 128 43 Prague 2, Czech Republic
The optimum conditions were found for the determination of 1,1-dimethyl-3-phenyltriazene in the concentration range from 1 × 10-4 to 1 × 10-7 mol l-1 by differential pulse voltammetry at a hanging mercury drop electrode. The sensitivity of the determination can be improved by preliminary adsorptive accumulation of the substance on the surface of the hanging mercury drop. Differential pulse adsorptive stripping voltammetry can be used for the purpose in the concentration range from 1 × 10-6 to 1 × 10-9 mol l-1. The determination limit is 1 × 10-9 mol l-1 for a deposition time of 10 min, the relative standard deviation being 5% (n = 10) for a concentration of 2 × 10-9 mol l-1.
References: 19 live references.