KFU. Card publication. Determination of Sterically Hindered Phenols and α-Tocopherol by Cyclic Voltammetry

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FEDERAL UNIVERSITY

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DETERMINATION OF STERICALLY HINDERED PHENOLS AND α-TOCOPHEROL BY CYCLIC VOLTAMMETRY

Form of presentation

Articles in international journals and collections

Year of publication

2012

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Authors, employees of KFU

Budnikov German Konstantinovich, author

Ziyatdinova Guzel Kamilevna, author

Authors, students KFU

Gaynetdinova Aliya Azgarovna, author

Bibliographic description in the original language

Ziyatdinova, G. Determination of sterically hindered phenols and α-tocopherol by cyclic voltammetry / G. Ziyatdinova, A. Khuzina, H. Budnikov // Anal. Lett. - 2012. - V. 45. - No. 12. - P. 1670-1685.

Annotation

Sterically hindered phenols (2,6-di-tert-butyl-4-methylphenol (BHT) and its derivatives) are irreversibly oxidized at þ0.96?1.30V on glassy carbon electrode (GCE) in 0.1M LiCIO4 in acetonitrile in accordance to cyclic voltammetry data. a-Tocopherol gives oxidation step at þ0.4V on voltammograms under the same conditions. Oxidation process leads to formation of corresponding quinoid derivatives. Calibration graphs linearity is 1.5?2 order for all compounds under investigation. Limits of detection are in the range 9.6?44.3 lM. The approach has been applied for determination of BHT and a-tocopherol in vegetable and lubricating oils as well as pharmaceuticals and cosmetics using preliminary single extraction of analytes with acetonitrile for 15 min at oil/extractant ratio of 1:2.5.

Keywords

a-Tocopherol, BHT, cyclic voltammetry, food analysis, lubricating oils, pharmaceutical analysis, sterically hindered phenolic antioxidants

The name of the journal

Analytical Letters

URL

https://www.scopus.com/inward/record.uri?eid=2-s2.0-84864568561&partnerID=40&md5=cda55caac79490d72625b80106149f3b

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

https://repository.kpfu.ru/eng/?p_id=134852&p_lang=2

Full metadata record

Field DC	Value	Language
dc.contributor.author	Budnikov German Konstantinovich	ru_RU
dc.contributor.author	Ziyatdinova Guzel Kamilevna	ru_RU
dc.contributor.author	Gaynetdinova Aliya Azgarovna	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. Determination of sterically hindered phenols and α-tocopherol by cyclic voltammetry / G. Ziyatdinova, A. Khuzina, H. Budnikov // Anal. Lett. - 2012. - V. 45. - No. 12. - P. 1670-1685.	ru_RU
dc.identifier.uri	https://repository.kpfu.ru/eng/?p_id=134852&p_lang=2	ru_RU
dc.description.abstract	Analytical Letters	ru_RU
dc.description.abstract	Sterically hindered phenols (2,6-di-tert-butyl-4-methylphenol (BHT) and its derivatives) are irreversibly oxidized at þ0.96?1.30V on glassy carbon electrode (GCE) in 0.1M LiCIO4 in acetonitrile in accordance to cyclic voltammetry data. a-Tocopherol gives oxidation step at þ0.4V on voltammograms under the same conditions. Oxidation process leads to formation of corresponding quinoid derivatives. Calibration graphs linearity is 1.5?2 order for all compounds under investigation. Limits of detection are in the range 9.6?44.3 lM. The approach has been applied for determination of BHT and a-tocopherol in vegetable and lubricating oils as well as pharmaceuticals and cosmetics using preliminary single extraction of analytes with acetonitrile for 15 min at oil/extractant ratio of 1:2.5.	ru_RU
dc.language.iso	ru	ru_RU
dc.subject	a-Tocopherol	ru_RU
dc.subject	BHT	ru_RU
dc.subject	cyclic voltammetry	ru_RU
dc.subject	food analysis	ru_RU
dc.subject	lubricating oils	ru_RU
dc.subject	pharmaceutical analysis	ru_RU
dc.subject	sterically hindered phenolic antioxidants	ru_RU
dc.title	Determination of Sterically Hindered Phenols and α-Tocopherol by Cyclic Voltammetry	ru_RU
dc.type	Articles in international journals and collections	ru_RU