Voltametrické stanovení ekotoxických nitrovaných sloučenin pomocí leštěné stříbrné pevné amalgámové kompozitní elektrody

Translated title of the contribution: Determination of ecotoxic nitro compounds using polished silver amalgam composite electrode

Jan Dědík, Vlastimil Vyskočil, Aleš Daňhel, Jiří Barek

Research output: Contribution to journalArticle

4 Citations (Scopus)

Abstract

Voltammetric behavior of biologically active 5-nitrobenzimidazole (NB) and 2,4,6-trinitrophenol (TNP) was investigated using direct current voltammetry (DCV) and differential pulse voltammetry (DPV) at a polished Ag amalgam composite electrode (p-AgSA-CE). The optimum conditions were found for their determination in Britton- Robinson buffer of pH 5.0 and 2.0 for NB and TNP, respectively. Unfortunately, due to inferior repeatability of measurements, the voltammetric method for NB could not be developed. A probable reason is the formation of a complex of NB with the epoxy resin on the electrode surface. The TNP calibration curves were linear in the concentration ranges 0.1-100 μmol l -1 (DCV) and 2-100 μmol l -1 (DPV), with the limits of quantification (LQ) ≈ 0.1 and 1 μmol l-1 for DCV and DPV, respectively. The applicability of the DCV method was verified by direct determination of TNP in model samples of drinking and river water, with LQ ≈ 0.6 and 2 μmol l -1, respectively.

Original languageCzech
Pages (from-to)217-223
Number of pages7
JournalChemicke Listy
Volume106
Issue number3
Publication statusPublished - 1 Mar 2012
Externally publishedYes

Fingerprint

Nitro Compounds
Mercury amalgams
Voltammetry
Silver
Electrodes
Composite materials
Epoxy Resins
Buffers
Rivers
Calibration
picric acid
Water

ASJC Scopus subject areas

  • Chemistry(all)

Cite this

Voltametrické stanovení ekotoxických nitrovaných sloučenin pomocí leštěné stříbrné pevné amalgámové kompozitní elektrody. / Dědík, Jan; Vyskočil, Vlastimil; Daňhel, Aleš; Barek, Jiří.

In: Chemicke Listy, Vol. 106, No. 3, 01.03.2012, p. 217-223.

Research output: Contribution to journalArticle

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title = "Voltametrick{\'e} stanoven{\'i} ekotoxick{\'y}ch nitrovan{\'y}ch sloučenin pomoc{\'i} leštěn{\'e} stř{\'i}brn{\'e} pevn{\'e} amalg{\'a}mov{\'e} kompozitn{\'i} elektrody",
abstract = "Voltammetric behavior of biologically active 5-nitrobenzimidazole (NB) and 2,4,6-trinitrophenol (TNP) was investigated using direct current voltammetry (DCV) and differential pulse voltammetry (DPV) at a polished Ag amalgam composite electrode (p-AgSA-CE). The optimum conditions were found for their determination in Britton- Robinson buffer of pH 5.0 and 2.0 for NB and TNP, respectively. Unfortunately, due to inferior repeatability of measurements, the voltammetric method for NB could not be developed. A probable reason is the formation of a complex of NB with the epoxy resin on the electrode surface. The TNP calibration curves were linear in the concentration ranges 0.1-100 μmol l -1 (DCV) and 2-100 μmol l -1 (DPV), with the limits of quantification (LQ) ≈ 0.1 and 1 μmol l-1 for DCV and DPV, respectively. The applicability of the DCV method was verified by direct determination of TNP in model samples of drinking and river water, with LQ ≈ 0.6 and 2 μmol l -1, respectively.",
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AU - Vyskočil, Vlastimil

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