Voltametrické stanovení triclosanu pomocí systému jednorázových měrných cel s integrovanou uhlíkovou elektrodou

Translated title of the contribution: Voltammetric determination of triclosan using a system of disposable electrochemical cells with integrated carbon electrode

Milan Libánský, Jiří Zima, Jiří Barek, Hana Dejmková

Research output: Contribution to journalArticle

1 Citation (Scopus)

Abstract

Optimum conditions were found for the determination of Triclosan, an environmental pollutant, by differential pulse voltammetry using a system of two types of new disposable electrochemical cells with integrated carbon composite film electrode. Concentration dependences were measured in a mixture of a buffer of pH 7 and methanol (9:1, V/V). The calculated Triclosan quantification limits were 1.64 and 0.85 μmol dm-3 for carbon-polystyrene (PS) and carbon-polycarbonate (PC) composite electrodes, respectively. The attempt to increase the sensitivity of the determination by adsorptive accumulation of Triclosan was not successful. The method was verified by the determination in a toothpaste using extraction. Concentration of the analyte was determined by the standard addition method. In the case of C-PS electrode, very good repeatability of the measurements was found. In the case of C-PC electrode, lower results and a worse repeatability were observed.

Original languageCzech
Pages (from-to)243-250
Number of pages8
JournalChemicke Listy
Volume108
Issue number3
Publication statusPublished - 14 Apr 2014
Externally publishedYes

Fingerprint

Triclosan
polycarbonate
Electrochemical cells
Carbon
Electrodes
Polystyrenes
Toothpastes
Environmental Pollutants
Carbon films
Composite films
Voltammetry
Methanol
Buffers
Composite materials

ASJC Scopus subject areas

  • Chemistry(all)

Cite this

Voltametrické stanovení triclosanu pomocí systému jednorázových měrných cel s integrovanou uhlíkovou elektrodou. / Libánský, Milan; Zima, Jiří; Barek, Jiří; Dejmková, Hana.

In: Chemicke Listy, Vol. 108, No. 3, 14.04.2014, p. 243-250.

Research output: Contribution to journalArticle

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title = "Voltametrick{\'e} stanoven{\'i} triclosanu pomoc{\'i} syst{\'e}mu jednor{\'a}zov{\'y}ch měrn{\'y}ch cel s integrovanou uhl{\'i}kovou elektrodou",
abstract = "Optimum conditions were found for the determination of Triclosan, an environmental pollutant, by differential pulse voltammetry using a system of two types of new disposable electrochemical cells with integrated carbon composite film electrode. Concentration dependences were measured in a mixture of a buffer of pH 7 and methanol (9:1, V/V). The calculated Triclosan quantification limits were 1.64 and 0.85 μmol dm-3 for carbon-polystyrene (PS) and carbon-polycarbonate (PC) composite electrodes, respectively. The attempt to increase the sensitivity of the determination by adsorptive accumulation of Triclosan was not successful. The method was verified by the determination in a toothpaste using extraction. Concentration of the analyte was determined by the standard addition method. In the case of C-PS electrode, very good repeatability of the measurements was found. In the case of C-PC electrode, lower results and a worse repeatability were observed.",
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AB - Optimum conditions were found for the determination of Triclosan, an environmental pollutant, by differential pulse voltammetry using a system of two types of new disposable electrochemical cells with integrated carbon composite film electrode. Concentration dependences were measured in a mixture of a buffer of pH 7 and methanol (9:1, V/V). The calculated Triclosan quantification limits were 1.64 and 0.85 μmol dm-3 for carbon-polystyrene (PS) and carbon-polycarbonate (PC) composite electrodes, respectively. The attempt to increase the sensitivity of the determination by adsorptive accumulation of Triclosan was not successful. The method was verified by the determination in a toothpaste using extraction. Concentration of the analyte was determined by the standard addition method. In the case of C-PS electrode, very good repeatability of the measurements was found. In the case of C-PC electrode, lower results and a worse repeatability were observed.

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