KFU. Card publication. Voltammetric determination of α-tocopherol in the presence of surfactants

KAZAN
FEDERAL UNIVERSITY

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- 中文
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VOLTAMMETRIC DETERMINATION OF α-TOCOPHEROL IN THE PRESENCE OF SURFACTANTS

Form of presentation

Articles in Russian journals and collections

Year of publication

2012

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Authors, employees of KFU

Budnikov German Konstantinovich, author

Ziganshina Endzhe Rishatovna, author

Ziyatdinova Guzel Kamilevna, author

Bibliographic description in the original language

Ziyatdinova, G.K. Voltammetric determination of α-tocopherol in the presence of surfactants / G.K. Ziyatdinova, E.R. Giniyatova, G.K. Budnikov // J. Anal. Chem. - 2012. - V. 67. - No. 5. - P. 467-473.

Annotation

As established, α-tocopherol is electrochemically active on glassy carbon electrode in the available range of anodic potentials in acetonitrile and its aqueous mixtures. However, an increase in the water percentage up to 50% and beyond leads to a substantial decrease and then the total disappearance of the analytical signal. A scheme of electrode reaction responsible for the signal formation is proposed. The effect of surfactants on the oxidation of α-tocopherol in aqueous acetonitrile is estimated. As found, surfactants (N-dodecylpyridinium bromide, Triton X-100 and N-cetylpyridinium bromide) enhance the current of α-tocopherol oxidation. The surfactants reduce the detection limit and extend the analytical range. Analytical methods for the voltammetric quantification of α-tocopherol in drugs in the presence of surfactants are elaborated and may be recommended for the control of pharmaceuticals.

Keywords

Surfactants, voltammetry, αtocopherol, glassy carbon electrode

The name of the journal

JOURNAL OF ANALYTICAL CHEMISTRY

URL

https://www.scopus.com/inward/record.uri?eid=2-s2.0-84861411754&partnerID=40&md5=55f097935c087b4b94ca59d27feb604b

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

https://repository.kpfu.ru/eng/?p_id=134858&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.date.accessioned	2012-01-01T00:00:00Z	ru_RU
dc.date.available	2012-01-01T00:00:00Z	ru_RU
dc.date.issued	2012	ru_RU
dc.identifier.citation	Ziyatdinova, G.K. Voltammetric determination of α-tocopherol in the presence of surfactants / G.K. Ziyatdinova, E.R. Giniyatova, G.K. Budnikov // J. Anal. Chem. - 2012. - V. 67. - No. 5. - P. 467-473.	ru_RU
dc.identifier.uri	https://repository.kpfu.ru/eng/?p_id=134858&p_lang=2	ru_RU
dc.description.abstract	JOURNAL OF ANALYTICAL CHEMISTRY	ru_RU
dc.description.abstract	As established, α-tocopherol is electrochemically active on glassy carbon electrode in the available range of anodic potentials in acetonitrile and its aqueous mixtures. However, an increase in the water percentage up to 50% and beyond leads to a substantial decrease and then the total disappearance of the analytical signal. A scheme of electrode reaction responsible for the signal formation is proposed. The effect of surfactants on the oxidation of α-tocopherol in aqueous acetonitrile is estimated. As found, surfactants (N-dodecylpyridinium bromide, Triton X-100 and N-cetylpyridinium bromide) enhance the current of α-tocopherol oxidation. The surfactants reduce the detection limit and extend the analytical range. Analytical methods for the voltammetric quantification of α-tocopherol in drugs in the presence of surfactants are elaborated and may be recommended for the control of pharmaceuticals.	ru_RU
dc.language.iso	ru	ru_RU
dc.subject	Surfactants	ru_RU
dc.subject	voltammetry	ru_RU
dc.subject	αtocopherol	ru_RU
dc.subject	glassy carbon electrode	ru_RU
dc.title	Voltammetric determination of α-tocopherol in the presence of surfactants	ru_RU
dc.type	Articles in Russian journals and collections	ru_RU