KFU. Card publication. Poly(gallic acid)/MWNT-modified electrode for the selective and sensitive voltammetric determination of quercetin in medicinal herbs

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POLY(GALLIC ACID)/MWNT-MODIFIED ELECTRODE FOR THE SELECTIVE AND SENSITIVE VOLTAMMETRIC DETERMINATION OF QUERCETIN IN MEDICINAL HERBS

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

Guss Ekaterina Valerevna, author

Ziyatdinova Guzel Kamilevna, author

Authors, postgraduates KFU

Guss Ekaterina Valerevna, postgraduate kfu

Bibliographic description in the original language

Ziyatdinova G. Poly(gallic acid)/MWNT-modified electrode for the selective and sensitive voltammetric determination of quercetin in medicinal herbs / G. Ziyatdinova, E. Kozlova, H. Budnikov // J. Electroanal. Chem. - 2018. - V. 821. - P. 73-81.

Annotation

Glassy carbon electrode modified with multi-walled carbon nanotubes and electropolymerized gallic acid (poly(gallic acid)/MWNT/GCE) has been developed for the direct quercetin quantification in medicinal herbs. The potentiodynamic electropolymerization procedure has been optimized. The best quercetin response has been registered on the polymeric film obtained using 15 cycles from 10 μM gallic acid in phosphate buffer (PB) pH 6.0 in the potential range from − 0.2 to 1.0 V and the scan rate of 100 mV s− 1. Scanning electron microscopy (SEM), cyclic voltammetry (CV) and electrochemical impedance spectroscopy (EIS) has been applied for the electrode characterization. The poly(gallic acid)/MWNT/GCE response is linear in the ranges of 0.075?25 μM and 25?100 μM of quercetin with the detection limit of 54 nM. The electrode selectivity in the presence of structurally related phenolic compounds is found.

Keywords

Voltammetry, modified electrodes, electropolymerization, carbon nanotubes, quercetin, phytochemical analysis

The name of the journal

Journal of Electroanalytical Chemistry

URL

https://www.scopus.com/inward/record.uri?eid=2-s2.0-85040112867&doi=10.1016%2fj.jelechem.2017.12.071&partnerID=40&md5=71420a826bc5dc88c4bb0f80576ae24d

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

https://repository.kpfu.ru/eng/?p_id=185060&p_lang=2

Full metadata record

Field DC	Value	Language
dc.contributor.author	Budnikov German Konstantinovich	ru_RU
dc.contributor.author	Guss Ekaterina Valerevna	ru_RU
dc.contributor.author	Ziyatdinova Guzel Kamilevna	ru_RU
dc.contributor.author	Guss Ekaterina Valerevna	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. Poly(gallic acid)/MWNT-modified electrode for the selective and sensitive voltammetric determination of quercetin in medicinal herbs / G. Ziyatdinova, E. Kozlova, H. Budnikov // J. Electroanal. Chem. - 2018. - V. 821. - P. 73-81.	ru_RU
dc.identifier.uri	https://repository.kpfu.ru/eng/?p_id=185060&p_lang=2	ru_RU
dc.description.abstract	Journal of Electroanalytical Chemistry	ru_RU
dc.description.abstract	Glassy carbon electrode modified with multi-walled carbon nanotubes and electropolymerized gallic acid (poly(gallic acid)/MWNT/GCE) has been developed for the direct quercetin quantification in medicinal herbs. The potentiodynamic electropolymerization procedure has been optimized. The best quercetin response has been registered on the polymeric film obtained using 15 cycles from 10 μM gallic acid in phosphate buffer (PB) pH 6.0 in the potential range from − 0.2 to 1.0 V and the scan rate of 100 mV s− 1. Scanning electron microscopy (SEM), cyclic voltammetry (CV) and electrochemical impedance spectroscopy (EIS) has been applied for the electrode characterization. The poly(gallic acid)/MWNT/GCE response is linear in the ranges of 0.075?25 μM and 25?100 μM of quercetin with the detection limit of 54 nM. The electrode selectivity in the presence of structurally related phenolic compounds is found.	ru_RU
dc.language.iso	ru	ru_RU
dc.subject	Voltammetry	ru_RU
dc.subject	modified electrodes	ru_RU
dc.subject	electropolymerization	ru_RU
dc.subject	carbon nanotubes	ru_RU
dc.subject	quercetin	ru_RU
dc.subject	phytochemical analysis	ru_RU
dc.title	Poly(gallic acid)/MWNT-modified electrode for the selective and sensitive voltammetric determination of quercetin in medicinal herbs	ru_RU
dc.type	Articles in international journals and collections	ru_RU