Form of presentation | Articles in Russian journals and collections |
Year of publication | 2009 |
Язык | английский |
|
Budnikov German Konstantinovich, author
Ziyatdinova Guzel Kamilevna, author
|
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Grigoreva Lidiya Vladimirovna, author
|
Bibliographic description in the original language |
Ziyatdinova, G.K. Electrochemical determination of unithiol and lipoic acid at electrodes modified with carbon nanotubes / G.K. Ziyatdinova, L.V. Grigor'eva, G.K. Budnikov // J. Anal. Chem. - 2009. - V. 64. - No. 2 - P. 185-188. |
Annotation |
Conditions are found for the voltammetric determination of lipoic acid and unithiol at a glassy-carbon electrode modified with multiwalled carbon nanotubes. Possible mechanisms for the oxidation of lipoic acid and unithiol are proposed. As compared to an unmodified electrode, the use of the modified electrode allows the analyst to reduce overvoltage (ΔE= 0.1 V) and increase the oxidation current of lipoic acid. Unithiol is oxidized in the accessible range of potentials only at an electrode modified with carbon nanotubes. The determination limits for unithiol and lipoic acid are 4.1×10(?5) and 1.9×10(?5) M, respectively. Milligram amounts of these substances are determined in model solutions with RSD = 1?5%. Procedures for determining the active substances (lipoic acid and unithiol) in pharmaceuticals are proposed. |
Keywords |
Voltammetry, chemically modified electrodes, carbon nanotubes, lipoic acid, unithiol, pharmaceutical analysis |
The name of the journal |
JOURNAL OF ANALYTICAL CHEMISTRY
|
URL |
https://www.scopus.com/inward/record.uri?eid=2-s2.0-59849103104&partnerID=40&md5=fbc1a5508213a66089debb9839609ac9 |
Please use this ID to quote from or refer to the card |
https://repository.kpfu.ru/eng/?p_id=134865&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 |
Grigoreva Lidiya Vladimirovna |
ru_RU |
dc.date.accessioned |
2009-01-01T00:00:00Z |
ru_RU |
dc.date.available |
2009-01-01T00:00:00Z |
ru_RU |
dc.date.issued |
2009 |
ru_RU |
dc.identifier.citation |
Ziyatdinova, G.K. Electrochemical determination of unithiol and lipoic acid at electrodes modified with carbon nanotubes / G.K. Ziyatdinova, L.V. Grigor'eva, G.K. Budnikov // J. Anal. Chem. - 2009. - V. 64. - No. 2 - P. 185-188. |
ru_RU |
dc.identifier.uri |
https://repository.kpfu.ru/eng/?p_id=134865&p_lang=2 |
ru_RU |
dc.description.abstract |
JOURNAL OF ANALYTICAL CHEMISTRY |
ru_RU |
dc.description.abstract |
Conditions are found for the voltammetric determination of lipoic acid and unithiol at a glassy-carbon electrode modified with multiwalled carbon nanotubes. Possible mechanisms for the oxidation of lipoic acid and unithiol are proposed. As compared to an unmodified electrode, the use of the modified electrode allows the analyst to reduce overvoltage (ΔE= 0.1 V) and increase the oxidation current of lipoic acid. Unithiol is oxidized in the accessible range of potentials only at an electrode modified with carbon nanotubes. The determination limits for unithiol and lipoic acid are 4.1×10(?5) and 1.9×10(?5) M, respectively. Milligram amounts of these substances are determined in model solutions with RSD = 1?5%. Procedures for determining the active substances (lipoic acid and unithiol) in pharmaceuticals are proposed. |
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 |
lipoic acid |
ru_RU |
dc.subject |
unithiol |
ru_RU |
dc.subject |
pharmaceutical analysis |
ru_RU |
dc.title |
Electrochemical determination of unithiol and lipoic acid at electrodes modified with carbon nanotubes |
ru_RU |
dc.type |
Articles in Russian journals and collections |
ru_RU |
|