KFU. Card publication. Selective electrochemical sensor based on the electropolymerized p-coumaric acid for the direct determination of L-cysteine

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SELECTIVE ELECTROCHEMICAL SENSOR BASED ON THE ELECTROPOLYMERIZED P-COUMARIC ACID FOR THE DIRECT DETERMINATION OF L-CYSTEINE

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. Selective electrochemical sensor based on the electropolymerized p-coumaric acid for the direct determination of L-cysteine / G. Ziyatdinova, E. Kozlova, H. Budnikov // Electrochim. Acta. – 2018. – V. 270. – P. 369-377.

Annotation

Novel electrochemical sensor based on poly(p-coumaric acid) electrodeposited on the surface of multi-walled carbon nanotubes modified glassy carbon electrode (poly(p-coumaric acid)/MWNT/GCE) has been developed for the direct determination of L-cysteine. Poly(p-coumaric acid) has been obtained by potentiodynamic electrolysis under the optimized conditions (0.10 mM p-coumaric acid in 0.1 M NaOH using 5 cycles in the potential window of 0-1.0 V and the scan rate of 25 mV s-1). Sensor surface has been studied by scanning electron microscopy, cyclic voltammetry and electrochemical impedance spectroscopy. Under conditions of DPV, the sensor response is linear in the ranges of 7.5-50 and 50-1000 ?M of L-cysteine with the detection and quantification limits of 1.1 and 3.6 ?M, respectively. The excellent sensor selectivity to L-cysteine in the presence of glucose, uric and ascorbic acids, dopamine, L-tyrosine and S-containing substances has been observed.

Keywords

Voltammetry, electrochemical sensors, electropolymerization, p-coumaric acid, L-cysteine.

The name of the journal

ELECTROCHIMICA ACTA

URL

https://www.scopus.com/inward/record.uri?eid=2-s2.0-85044144988&doi=10.1016%2fj.electacta.2018.03.102&partnerID=40&md5=7162fb0be2e4fe5c599e54b35692e27b

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

https://repository.kpfu.ru/eng/?p_id=181082&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. Selective electrochemical sensor based on the electropolymerized p-coumaric acid for the direct determination of L-cysteine / G. Ziyatdinova, E. Kozlova, H. Budnikov // Electrochim. Acta. – 2018. – V. 270. – P. 369-377.	ru_RU
dc.identifier.uri	https://repository.kpfu.ru/eng/?p_id=181082&p_lang=2	ru_RU
dc.description.abstract	ELECTROCHIMICA ACTA	ru_RU
dc.description.abstract	Novel electrochemical sensor based on poly(p-coumaric acid) electrodeposited on the surface of multi-walled carbon nanotubes modified glassy carbon electrode (poly(p-coumaric acid)/MWNT/GCE) has been developed for the direct determination of L-cysteine. Poly(p-coumaric acid) has been obtained by potentiodynamic electrolysis under the optimized conditions (0.10 mM p-coumaric acid in 0.1 M NaOH using 5 cycles in the potential window of 0-1.0 V and the scan rate of 25 mV s-1). Sensor surface has been studied by scanning electron microscopy, cyclic voltammetry and electrochemical impedance spectroscopy. Under conditions of DPV, the sensor response is linear in the ranges of 7.5-50 and 50-1000 ?M of L-cysteine with the detection and quantification limits of 1.1 and 3.6 ?M, respectively. The excellent sensor selectivity to L-cysteine in the presence of glucose, uric and ascorbic acids, dopamine, L-tyrosine and S-containing substances has been observed.	ru_RU
dc.language.iso	ru	ru_RU
dc.subject	Voltammetry	ru_RU
dc.subject	electrochemical sensors	ru_RU
dc.subject	electropolymerization	ru_RU
dc.subject	p-coumaric acid	ru_RU
dc.subject	L-cysteine.	ru_RU
dc.title	Selective electrochemical sensor based on the electropolymerized p-coumaric acid for the direct determination of L-cysteine	ru_RU
dc.type	Articles in international journals and collections	ru_RU