Abstract
2-Aminoanthraquinone (2-AA) is a genotoxic intermediate in the industrial synthesis of anthraquinone dyes. In this work, electroanalytical methods based on two-electron reduction of anthraquinone at mercury electrodes were developed for determination of microto nanomolar concentrations of this analyte in mixed aqueous-methanol media. Calibration plots obtained for differential pulse voltammetry and direct current voltammetry at a hanging mercury drop electrode exhibited a sigmoidal shape within the analyte's concentration range of (1-500) × 10-7 mol L-1, presumably because of strong adsorption of the analyte at the electrode surface. Linearity of the calibration plots was achieved for higher concentrations of 2-AA at a conventional dropping mercury electrode using DC tast polarography and differential pulse polarography, with limit of quantitation of 4 × 10-6 mol L -1 in Britton-Robinson buffer (pH 6)-methanol mixture (1:1). Adsorption of 2-AA on the electrode surface enabled its determination at nanomolar concentrations (limit of quantitation 2.8 × 10-9 mol L-1) using cathodic adsorptive stripping voltammetry in Britton-Robinson buffer (pH 2)-methanol mixture (99:1).
| Original language | English |
|---|---|
| Pages (from-to) | 989-1001 |
| Number of pages | 13 |
| Journal | Chemia Analityczna |
| Volume | 52 |
| Issue number | 6 |
| Publication status | Published - 1 Dec 2007 |
| Externally published | Yes |
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Keywords
- 2-Aminoanthraquinone
- Adsorptive stripping voltammetry
- DC tast polarography
- Differential pulse polarography
- Differential pulse voltammetry
- Direct current voltammetry
ASJC Scopus subject areas
- Analytical Chemistry
Cite this
Polarographic and voltammetric determination of trace amounts of 2-aminoanthraquinone. / Pecková, Karolina; Ayyildiz, Hamide Filiz; Topkafa, Mustafa; Kara, Huseyin; Ersoz, Mustafa; Barek, Jiří.
In: Chemia Analityczna, Vol. 52, No. 6, 01.12.2007, p. 989-1001.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Polarographic and voltammetric determination of trace amounts of 2-aminoanthraquinone
AU - Pecková, Karolina
AU - Ayyildiz, Hamide Filiz
AU - Topkafa, Mustafa
AU - Kara, Huseyin
AU - Ersoz, Mustafa
AU - Barek, Jiří
PY - 2007/12/1
Y1 - 2007/12/1
N2 - 2-Aminoanthraquinone (2-AA) is a genotoxic intermediate in the industrial synthesis of anthraquinone dyes. In this work, electroanalytical methods based on two-electron reduction of anthraquinone at mercury electrodes were developed for determination of microto nanomolar concentrations of this analyte in mixed aqueous-methanol media. Calibration plots obtained for differential pulse voltammetry and direct current voltammetry at a hanging mercury drop electrode exhibited a sigmoidal shape within the analyte's concentration range of (1-500) × 10-7 mol L-1, presumably because of strong adsorption of the analyte at the electrode surface. Linearity of the calibration plots was achieved for higher concentrations of 2-AA at a conventional dropping mercury electrode using DC tast polarography and differential pulse polarography, with limit of quantitation of 4 × 10-6 mol L -1 in Britton-Robinson buffer (pH 6)-methanol mixture (1:1). Adsorption of 2-AA on the electrode surface enabled its determination at nanomolar concentrations (limit of quantitation 2.8 × 10-9 mol L-1) using cathodic adsorptive stripping voltammetry in Britton-Robinson buffer (pH 2)-methanol mixture (99:1).
AB - 2-Aminoanthraquinone (2-AA) is a genotoxic intermediate in the industrial synthesis of anthraquinone dyes. In this work, electroanalytical methods based on two-electron reduction of anthraquinone at mercury electrodes were developed for determination of microto nanomolar concentrations of this analyte in mixed aqueous-methanol media. Calibration plots obtained for differential pulse voltammetry and direct current voltammetry at a hanging mercury drop electrode exhibited a sigmoidal shape within the analyte's concentration range of (1-500) × 10-7 mol L-1, presumably because of strong adsorption of the analyte at the electrode surface. Linearity of the calibration plots was achieved for higher concentrations of 2-AA at a conventional dropping mercury electrode using DC tast polarography and differential pulse polarography, with limit of quantitation of 4 × 10-6 mol L -1 in Britton-Robinson buffer (pH 6)-methanol mixture (1:1). Adsorption of 2-AA on the electrode surface enabled its determination at nanomolar concentrations (limit of quantitation 2.8 × 10-9 mol L-1) using cathodic adsorptive stripping voltammetry in Britton-Robinson buffer (pH 2)-methanol mixture (99:1).
KW - 2-Aminoanthraquinone
KW - Adsorptive stripping voltammetry
KW - DC tast polarography
KW - Differential pulse polarography
KW - Differential pulse voltammetry
KW - Direct current voltammetry
UR - http://www.scopus.com/inward/record.url?scp=39649091182&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=39649091182&partnerID=8YFLogxK
M3 - Article
VL - 52
SP - 989
EP - 1001
JO - Chemia Analityczna
JF - Chemia Analityczna
SN - 0009-2223
IS - 6
ER -