Collect. Czech. Chem. Commun. 1994, 59, 1761-1771

Determination of 2-Nitrophenol, 4-Nitrophenol, 2-Methoxy-5-nitrophenol, and 2,4-Dinitrophenol by Differential Pulse Voltammetry and Adsorptive Stripping Voltammetry

Jiří Bareka, Hana Ebertováa, Viktor Mejstříkb and Jiří Zimaa

a UNESCO Laboratory of Environmental Electrochemistry, Department of Analytical Chemistry, Charles University, 128 40 Prague 2, Czech Republic
b Centre for Environmental and Analytical Chemistry and Toxicology, Research Institute of Organic Synthesis, 532 18 Pardubice-Rybitví, Czech Republic


The behaviour of the title substances, which are components of the commercial plant growth stimulator Sviton, in differential pulse voltammetry at a hanging mercury drop electrode was studied and the optimum conditions were established for their quantitation over the concentration region of 1 .10-7 to 1 .10-5 mol l-1. Additional decrease in the limit of determination was achieved in adsorptive stripping voltammetry, by which 4-nitrophenol and 2-nitrophenol can be determined within the concentration regions of 2 .10-10 to 1 .10-7 and 2 .10-8 to 1. 10-7 mol l-1, respectively, and 2,4-dinitrophenol and 2-methoxy-5-nitrophenol within the region of 2 .10-9 to 1 .10-7 mol l-1.