KFU. Card publication. Reactions of superoxide anion radical with antioxidants and their use in voltammetry

KAZAN
FEDERAL UNIVERSITY

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REACTIONS OF SUPEROXIDE ANION RADICAL WITH ANTIOXIDANTS AND THEIR USE IN VOLTAMMETRY

Form of presentation

Articles in Russian journals and collections

Year of publication

2005

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Authors, employees of KFU

Budnikov German Konstantinovich, author

Ziyatdinova Guzel Kamilevna, author

Authors, students KFU

Gilmetdinova Dilbar Minnekasimovna, author

Bibliographic description in the original language

Ziyatdinova G.K., Gil'metdinova D.M., Budnikov G.K. Reactions of superoxide anion radical with antioxidants and their use in voltammetry // J. Anal. Chem. - 2005. - V. 60. - No. 1. - P. 49-52.

Annotation

Kinetic parameters were calculated for the electrochemical reduction of oxygen at a glassy-carbon electrode with the generation of superoxide radical anions in a 0.05 M solution of (C2H5)4NI in dimethylformamide in the presence of fat-soluble antioxidants, retinol and α-tocopherol. A procedure based on the protonation of the radical anion with antioxidant molecules is proposed for the voltammetric determination of antioxidants to determine milligram amounts of retinol and α-tocopherol in model solutions (RSD = 1?2%). The calibration graphs for retinol and α-tocopherol are linear in the concentration ranges 9.7×10(?5)?2.3×10(?3) and 6.2×10(?4)?3.1×10(?3) M, respectively. The detection limits for retinol and α-tocopherol are 4.8×10(?5) and 4.1×10(?4) M, respectively. The procedure was applied to the determination of the active component (retinol and α-tocopherol) in pharmaceuticals.

Keywords

Superoxide anion-radical, voltammetry, retinol, α-tocopherol, pharmaceutical analysis

The name of the journal

JOURNAL OF ANALYTICAL CHEMISTRY

URL

https://www.scopus.com/inward/record.uri?eid=2-s2.0-14944356168&partnerID=40&md5=b0bdd142941b97fe253a49c27134d8fa

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

https://repository.kpfu.ru/eng/?p_id=134873&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	Gilmetdinova Dilbar Minnekasimovna	ru_RU
dc.date.accessioned	2005-01-01T00:00:00Z	ru_RU
dc.date.available	2005-01-01T00:00:00Z	ru_RU
dc.date.issued	2005	ru_RU
dc.identifier.citation	Ziyatdinova G.K., Gil'metdinova D.M., Budnikov G.K. Reactions of superoxide anion radical with antioxidants and their use in voltammetry // J. Anal. Chem. - 2005. - V. 60. - No. 1. - P. 49-52.	ru_RU
dc.identifier.uri	https://repository.kpfu.ru/eng/?p_id=134873&p_lang=2	ru_RU
dc.description.abstract	JOURNAL OF ANALYTICAL CHEMISTRY	ru_RU
dc.description.abstract	Kinetic parameters were calculated for the electrochemical reduction of oxygen at a glassy-carbon electrode with the generation of superoxide radical anions in a 0.05 M solution of (C2H5)4NI in dimethylformamide in the presence of fat-soluble antioxidants, retinol and α-tocopherol. A procedure based on the protonation of the radical anion with antioxidant molecules is proposed for the voltammetric determination of antioxidants to determine milligram amounts of retinol and α-tocopherol in model solutions (RSD = 1?2%). The calibration graphs for retinol and α-tocopherol are linear in the concentration ranges 9.7×10(?5)?2.3×10(?3) and 6.2×10(?4)?3.1×10(?3) M, respectively. The detection limits for retinol and α-tocopherol are 4.8×10(?5) and 4.1×10(?4) M, respectively. The procedure was applied to the determination of the active component (retinol and α-tocopherol) in pharmaceuticals.	ru_RU
dc.language.iso	ru	ru_RU
dc.subject	Superoxide anion-radical	ru_RU
dc.subject	voltammetry	ru_RU
dc.subject	retinol	ru_RU
dc.subject	α-tocopherol	ru_RU
dc.subject	pharmaceutical analysis	ru_RU
dc.title	Reactions of superoxide anion radical with antioxidants and their use in voltammetry	ru_RU
dc.type	Articles in Russian journals and collections	ru_RU