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 |
|---|---|
| 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 |
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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)
Cite this
Polarographic and voltammetric study of genotoxic 2,7-dinitrofluoren-9-one and its determination using mercury electrodes. / Vyskočil, Vlastimil; Barek, Jiří.
In: Collection of Czechoslovak Chemical Communications, Vol. 74, No. 11-12, 01.11.2009, p. 1675-1696.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Polarographic and voltammetric study of genotoxic 2,7-dinitrofluoren-9-one and its determination using mercury electrodes
AU - Vyskočil, Vlastimil
AU - Barek, Jiří
PY - 2009/11/1
Y1 - 2009/11/1
N2 - 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.
AB - 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.
KW - 27-Dinitrofluoren-9-one
KW - Electroanalysis
KW - Electroreduction
KW - Mercury electrodes
KW - Nitro compounds
KW - Polarography
KW - Potentiostatic coulometry
KW - Reduction mechanism
KW - Solid-phase extraction
KW - Voltammetry
UR - http://www.scopus.com/inward/record.url?scp=77950656194&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=77950656194&partnerID=8YFLogxK
U2 - 10.1135/cccc2009108
DO - 10.1135/cccc2009108
M3 - Article
VL - 74
SP - 1675
EP - 1696
JO - Collection of Czechoslovak Chemical Communications
JF - Collection of Czechoslovak Chemical Communications
SN - 0010-0765
IS - 11-12
ER -