Electrochemical study of 5-nitroquinoline using carbon film electrode and its determination in model samples of drinking and river water

Tereza Rumlova, Ivan Jiranek, Vlastimil Vyskocil, Jiri Barek

Research output: Contribution to journalArticle

4 Citations (Scopus)

Abstract

This work is focused on the determination of submicromolar concentrations of 5-nitroquinoline (5-NQ) using differential pulse voltammetry (DPV) and direct current voltammetry (DCV) at a novel type of carbon film electrode (CFE). The advantages of CFE are its wide potential window in both cathodic and anodic regions (ca 3 V span), high sensitivity, and low noise of measurements. The other advantages of CFE are the possibility to quickly and easily renew the electrode surface and also non-toxicity for environment compared to mercury electrodes. Calibration dependences in deionized water are linear from 0.4 to 100 μmol dm-3, with limit of quantification (LOQ) 1 μmol dm-3 using DCV, and from 0.2 to 100 μmol dm-3, with LOQ 0.4 μmol dm-3 using DPV. The DPV method was verified for model samples of drinking and river water. The calibration dependences were linear in the concentration ranges from 0.2 to 10 μmol dm-3 for both matrices, with LOQ 0.2 μmol dm-3 for drinking water and LOQ 0.6 μmol dm-3 for river water, respectively. This work has proved the usability of CFE for submicromolar determination of 5-NQ based on cathodic reduction of the present nitro group.

Original languageEnglish
Pages (from-to)153-158
Number of pages6
JournalMonatshefte fur Chemie
Volume147
Issue number1
DOIs
Publication statusPublished - 1 Jan 2016
Externally publishedYes

Keywords

  • 5-Nitroquinoline
  • Carbon film electrode
  • Electrochemistry
  • Reduction
  • Voltammetry

ASJC Scopus subject areas

  • Chemistry(all)

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