KFU. Card publication. Voltammetric Determinations of Thymol on an Electrode Modified by Coimmobilized Carboxylated Multiwalled Carbon Nanotubes and Surfactants

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VOLTAMMETRIC DETERMINATIONS OF THYMOL ON AN ELECTRODE MODIFIED BY COIMMOBILIZED CARBOXYLATED MULTIWALLED CARBON NANOTUBES AND SURFACTANTS

Form of presentation

Articles in international journals and collections

Year of publication

2018

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Authors, employees of KFU

Budnikov German Konstantinovich, author

Ziganshina Endzhe Rishatovna, author

Ziyatdinova Guzel Kamilevna, author

Authors, students KFU

Romashkina Svetlana Aleksandrovna, author

Bibliographic description in the original language

Ziyatdinova, G.K. Voltammetric determination of thymol on an electrode modified by coimmobilized carboxylated multiwalled carbon nanotubes and surfactants / G.K. Ziyatdinova, S.A. Romashkina, E.R. Ziganshina, H.C. Budnikov // J. Anal. Chem. – 2018. – V. 73. – � 1. – P. 63-70.

Annotation

Thymol is oxidized at glassy carbon electrodes (GCEs) modified with coimmobilized carboxylated multiwalled carbon nanotubes (MWCNT-COOH) and surfactants of various nature in a Britton–Robinson buffer solution. The effect of the nature and concentration of surfactants in the composition of the electrode surface modifier on the amperometric response of thymol was evaluated. It was found that the best voltammetric characteristics are achieved in the case of an anionic 0.10 mM sodium dodecyl sulfate (SDS) (a decrease in oxidation potential by 50 mV and an increase in oxidation currents 2.2-fold in comparison with MWCNT-COOH/GCE). The electrooxidation of thymol at MWCNT-COOH–SDS/GCE proceeds irreversibly with the participation of one electron and one proton and is controlled by the adsorption of the analyte. The electrode response is linear in the ranges 0.500–17.0 and 17.0–150 μM of thymol with the limits of detection 0.14 μM and determination 0.48 μM.

Keywords

Voltammetry, chemically modified electrodes, carbon nanotubes, surfactants, thymol, pharmaceutical analysis

The name of the journal

JOURNAL OF ANALYTICAL CHEMISTRY

URL

https://www.scopus.com/inward/record.uri?eid=2-s2.0-85043398134&doi=10.1134%2fS1061934818010148&partnerID=40&md5=360ef03c4193e3e8fc9af2d0fa32b089

Please use this ID to quote from or refer to the card

https://repository.kpfu.ru/eng/?p_id=179486&p_lang=2

Full metadata record

Field DC	Value	Language
dc.contributor.author	Budnikov German Konstantinovich	ru_RU
dc.contributor.author	Ziganshina Endzhe Rishatovna	ru_RU
dc.contributor.author	Ziyatdinova Guzel Kamilevna	ru_RU
dc.contributor.author	Romashkina Svetlana Aleksandrovna	ru_RU
dc.date.accessioned	2018-01-01T00:00:00Z	ru_RU
dc.date.available	2018-01-01T00:00:00Z	ru_RU
dc.date.issued	2018	ru_RU
dc.identifier.citation	Ziyatdinova, G.K. Voltammetric determination of thymol on an electrode modified by coimmobilized carboxylated multiwalled carbon nanotubes and surfactants / G.K. Ziyatdinova, S.A. Romashkina, E.R. Ziganshina, H.C. Budnikov // J. Anal. Chem. – 2018. – V. 73. – � 1. – P. 63-70.	ru_RU
dc.identifier.uri	https://repository.kpfu.ru/eng/?p_id=179486&p_lang=2	ru_RU
dc.description.abstract	JOURNAL OF ANALYTICAL CHEMISTRY	ru_RU
dc.description.abstract	Thymol is oxidized at glassy carbon electrodes (GCEs) modified with coimmobilized carboxylated multiwalled carbon nanotubes (MWCNT-COOH) and surfactants of various nature in a Britton–Robinson buffer solution. The effect of the nature and concentration of surfactants in the composition of the electrode surface modifier on the amperometric response of thymol was evaluated. It was found that the best voltammetric characteristics are achieved in the case of an anionic 0.10 mM sodium dodecyl sulfate (SDS) (a decrease in oxidation potential by 50 mV and an increase in oxidation currents 2.2-fold in comparison with MWCNT-COOH/GCE). The electrooxidation of thymol at MWCNT-COOH–SDS/GCE proceeds irreversibly with the participation of one electron and one proton and is controlled by the adsorption of the analyte. The electrode response is linear in the ranges 0.500–17.0 and 17.0–150 μM of thymol with the limits of detection 0.14 μM and determination 0.48 μM.	ru_RU
dc.language.iso	ru	ru_RU
dc.subject	Voltammetry	ru_RU
dc.subject	chemically modified electrodes	ru_RU
dc.subject	carbon nanotubes	ru_RU
dc.subject	surfactants	ru_RU
dc.subject	thymol	ru_RU
dc.subject	pharmaceutical analysis	ru_RU
dc.title	Voltammetric Determinations of Thymol on an Electrode Modified by Coimmobilized Carboxylated Multiwalled Carbon Nanotubes and Surfactants	ru_RU
dc.type	Articles in international journals and collections	ru_RU