Voltammetric Determination of Trace Amounts of 2-Aminofluoren-9-one with Preconcentration of the Analyte by Solid-Phase Extraction

Authors

  • A. Hájková Charles University in Prague, Faculty of Science, University Centre of Excellence UNCE "Supramolecular Chemistry", Department of Analytical Chemistry, UNESCO Laboratory of Environmental Electrochemistry, Prague
  • V. Vyskočil Charles University in Prague, Faculty of Science, University Centre of Excellence UNCE "Supramolecular Chemistry", Department of Analytical Chemistry, UNESCO Laboratory of Environmental Electrochemistry, Prague
  • J. Barek Charles University in Prague, Faculty of Science, University Centre of Excellence UNCE "Supramolecular Chemistry", Department of Analytical Chemistry, UNESCO Laboratory of Environmental Electrochemistry, Prague

Keywords:

adsorptive stripping differential pulse voltammetry, hanging mercury drop minielectrode, solid-phase extraction, supramolecular interactions, 2-aminofluoren-9-one, surface water contamination, drinking water, river water

Abstract

Optimum conditions were found for the determination of nanomolar and subnanomolar concentrations of genotoxic 2-aminofluoren-9-one (2-AFN) by adsorptive stripping differential pulse voltammetry (AdSDPV) at a hanging mercury drop minielectrode (HMDmE) after preliminary separation and preconcentration by solid-phase extraction (SPE) in LiChrolut RP-18 E (500 mg) columns. The adsorbed analyte was eluted with acetone, the solution then evaporated to dryness, and the residue dissolved in acetate buffer (pH 4.0) (AcB). A sample was then measured by AdSDPV at the HMDmE, with the accumulation potential 100 mV (vs. Ag|AgCl in 1 mol l–1 KCl) and the accumulation time 120 s. Linear calibration curves were obtained for 2·10–11 – 1·10–9 mol l–1 2-AFN, with the limit of quantification (LQ) ≈ 4·10–11 mol l–1. The method was verified by the determination of 2-AFN in model samples of drinking and river water at concentrations 4·10–11 – 1·10–9 and 2·10–10 – 1·10–9 mol l–1 (LQ ≈ 6·10–11 and 4·10–10 mol l–1, respectively).

Published

2013-03-15

How to Cite

Hájková, A., Vyskočil, V., & Barek, J. (2013). Voltammetric Determination of Trace Amounts of 2-Aminofluoren-9-one with Preconcentration of the Analyte by Solid-Phase Extraction. Chemické Listy, 107(3), 234–240. Retrieved from http://ww-w.chemicke-listy.cz/ojs3/index.php/chemicke-listy/article/view/748

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