Voltammetric Determination of Genotoxic Dinitronaphthalenes with Meniscus-Modified Silver Solid Amalgam Electrode
a Department of Analytical Chemistry, UNESCO Laboratory of Environmental Electrochemistry, Faculty of Science, Charles University, Prague, b J. Heyrovský Institute of Physical Chemistry, Academy of Sciences of the Czech Republic, Prague
Optimum conditions are described for the determination of genotoxic 1,3-, 1,5- and 1,8-dinitronaphthalenes (DNN) by differential pulse voltammetry (DPV) on the silver solid amalgam electrode modified with a meniscus. The limits of quantification were found to be 2?10−6 mol l−1 for 1,3-DNN, 1?10−6 mol l−1 for 1,5-DNN and 5?10−7 mol l−1 for 1,8-DNN. The DNNs in submicromolar concentrations cannot be determined by adsorptive stripping voltammetry on the above electrode.
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