Polarographic and voltammetric study of genotoxic 2,7-dinitrofluoren-9-one and its determination using mercury electrodes

Vlastimil Vyskočil, Jiří Barek

Research output: Contribution to journalArticle

18 Citations (Scopus)

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.

Original languageEnglish
Pages (from-to)1675-1696
Number of pages22
JournalCollection of Czechoslovak Chemical Communications
Volume74
Issue number11-12
DOIs
Publication statusPublished - 1 Nov 2009
Externally publishedYes

Keywords

  • 27-Dinitrofluoren-9-one
  • Electroanalysis
  • Electroreduction
  • Mercury electrodes
  • Nitro compounds
  • Polarography
  • Potentiostatic coulometry
  • Reduction mechanism
  • Solid-phase extraction
  • Voltammetry

ASJC Scopus subject areas

  • Chemistry(all)

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