Title: Polarographic and voltammetric study of genotoxic 2,7-dinitrofluoren-9-one and its determination using mercury electrodes
Abstract: Electrochemical behavior of genotoxic 2,7-dinitrofluoren-9-one was investigated by DC polarography and DC tast polarography, both at a dropping mercury electrode, and by cyclic voltammetry at a hanging mercury drop electrode, in buffered aqueous-methanolic solutions. The number of exchanged electrons was determined by constant-potential coulometry at a mercury pool electrode. A possible mechanism of the electrochemical reduction has been proposed. Optimal conditions were found for the determination of 2,7-dinitrofluoren-9-one by DC tast polarography in the concentration range from 2 × 10 –6 to 1 × 10 –5 mol l –1 and by differential pulse polarography (from 2 × 10 –7 to 1 × 10 –5 mol l –1 ), both at dropping mercury electrode, by differential pulse voltammetry (from 2 × 10 –8 to 1 × 10 –5 mol l –1 ) and by adsorptive stripping voltammetry (from 2 × 10 –9 to 1 × 10 –7 mol l –1 ), both at hanging mercury drop electrode. Practical applicability of the developed methods was verified on the direct determination of 2,7-dinitrofluoren-9-one in drinking water in 10 –8 mol l –1 concentration range, and in drinking and river water (both in 10 –9 mol l –1 concentration range) using preliminary separation and preconcentration by solid-phase extraction.
Publication Year: 2009
Publication Date: 2009-01-01
Language: en
Type: article
Indexed In: ['crossref']
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Cited By Count: 16
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