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 language | English |
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Pages (from-to) | 1675-1696 |
Number of pages | 22 |
Journal | Collection of Czechoslovak Chemical Communications |
Volume | 74 |
Issue number | 11-12 |
DOIs | |
Publication status | Published - 1 Nov 2009 |
Externally published | Yes |
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)