Polarographic and voltammetric determination of trace amounts of 2-aminoanthraquinone

Karolina Pecková, Hamide Filiz Ayyildiz, Mustafa Topkafa, Huseyin Kara, Mustafa Ersoz, Jiří Barek

Research output: Contribution to journalArticle

4 Citations (Scopus)

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 languageEnglish
Pages (from-to)989-1001
Number of pages13
JournalChemia Analityczna
Volume52
Issue number6
Publication statusPublished - 1 Dec 2007
Externally publishedYes

    Fingerprint

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

Pecková, K., Ayyildiz, H. F., Topkafa, M., Kara, H., Ersoz, M., & Barek, J. (2007). Polarographic and voltammetric determination of trace amounts of 2-aminoanthraquinone. Chemia Analityczna, 52(6), 989-1001.