Determination of pentahydroxyflavones using coated chitosan multi-wall carbon nanotubes and an ionic liquid glassy carbon electrode by adsorption stripping voltammetry (AdSV)

Adrián Mariño; Yaritza Leiva; Karen Bolaños; Olimpo García-Beltrán; Edgar Nagles

doi:10.1016/j.jelechem.2015.11.008

Determination of pentahydroxyflavones using coated chitosan multi-wall carbon nanotubes and an ionic liquid glassy carbon electrode by adsorption stripping voltammetry (AdSV)

Adrián Mariño, Yaritza Leiva, Karen Bolaños, Olimpo García-Beltrán, Edgar Nagles

Research output: Contribution to journal › Article › peer-review

9 Scopus citations

Abstract

In this work, the determination of pentahydroxyflavones on a glassy carbon electrode modified with chitosan and multi-walled carbon nanotubes (Ch-MWCNT) was studied. The presence of ionic liquids (LIs) on the surface of the modified electrode (Ch-MWCNT-LI-GCE) increased the oxidation current by nearly 20%. The pH and electrochemical parameters (adsorptive potential and time accumulation) were optimized based on the oxidation of morin to obtain the following values: pH, 3.2; E_ads, - 0.10 V; and t_ads, 70 s. The detection limit was 0.54 × 10^{- 7} mol L^{- 1} and the RSD was 1.7%. The new method was used to quantify pentahydroxyflavones in plant tissue samples.

Original language	English
Pages (from-to)	153-157
Number of pages	5
Journal	Journal of Electroanalytical Chemistry
Volume	759
DOIs	https://doi.org/10.1016/j.jelechem.2015.11.008
State	Published - 15 Dec 2015
Externally published	Yes

Bibliographical note

Publisher Copyright:
© 2015 Elsevier B.V. All rights reserved.

Keywords

Adsorption voltammetry
Ionic liquids
Multi-wall carbon nanotubes
Pentahydroxyflavone

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10.1016/j.jelechem.2015.11.008

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title = "Determination of pentahydroxyflavones using coated chitosan multi-wall carbon nanotubes and an ionic liquid glassy carbon electrode by adsorption stripping voltammetry (AdSV)",

abstract = "In this work, the determination of pentahydroxyflavones on a glassy carbon electrode modified with chitosan and multi-walled carbon nanotubes (Ch-MWCNT) was studied. The presence of ionic liquids (LIs) on the surface of the modified electrode (Ch-MWCNT-LI-GCE) increased the oxidation current by nearly 20%. The pH and electrochemical parameters (adsorptive potential and time accumulation) were optimized based on the oxidation of morin to obtain the following values: pH, 3.2; Eads, - 0.10 V; and tads, 70 s. The detection limit was 0.54 × 10- 7 mol L- 1 and the RSD was 1.7%. The new method was used to quantify pentahydroxyflavones in plant tissue samples.",

keywords = "Adsorption voltammetry, Ionic liquids, Multi-wall carbon nanotubes, Pentahydroxyflavone",

author = "Adri{\'a}n Mari{\~n}o and Yaritza Leiva and Karen Bola{\~n}os and Olimpo Garc{\'i}a-Beltr{\'a}n and Edgar Nagles",

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month = dec,

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doi = "10.1016/j.jelechem.2015.11.008",

language = "Ingl{\'e}s",

volume = "759",

pages = "153--157",

journal = "Journal of Electroanalytical Chemistry",

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Determination of pentahydroxyflavones using coated chitosan multi-wall carbon nanotubes and an ionic liquid glassy carbon electrode by adsorption stripping voltammetry (AdSV). / Mariño, Adrián; Leiva, Yaritza; Bolaños, Karen et al.
In: Journal of Electroanalytical Chemistry, Vol. 759, 15.12.2015, p. 153-157.

Research output: Contribution to journal › Article › peer-review

TY - JOUR

T1 - Determination of pentahydroxyflavones using coated chitosan multi-wall carbon nanotubes and an ionic liquid glassy carbon electrode by adsorption stripping voltammetry (AdSV)

AU - Mariño, Adrián

AU - Leiva, Yaritza

AU - Bolaños, Karen

AU - García-Beltrán, Olimpo

AU - Nagles, Edgar

PY - 2015/12/15

Y1 - 2015/12/15

N2 - In this work, the determination of pentahydroxyflavones on a glassy carbon electrode modified with chitosan and multi-walled carbon nanotubes (Ch-MWCNT) was studied. The presence of ionic liquids (LIs) on the surface of the modified electrode (Ch-MWCNT-LI-GCE) increased the oxidation current by nearly 20%. The pH and electrochemical parameters (adsorptive potential and time accumulation) were optimized based on the oxidation of morin to obtain the following values: pH, 3.2; Eads, - 0.10 V; and tads, 70 s. The detection limit was 0.54 × 10- 7 mol L- 1 and the RSD was 1.7%. The new method was used to quantify pentahydroxyflavones in plant tissue samples.

AB - In this work, the determination of pentahydroxyflavones on a glassy carbon electrode modified with chitosan and multi-walled carbon nanotubes (Ch-MWCNT) was studied. The presence of ionic liquids (LIs) on the surface of the modified electrode (Ch-MWCNT-LI-GCE) increased the oxidation current by nearly 20%. The pH and electrochemical parameters (adsorptive potential and time accumulation) were optimized based on the oxidation of morin to obtain the following values: pH, 3.2; Eads, - 0.10 V; and tads, 70 s. The detection limit was 0.54 × 10- 7 mol L- 1 and the RSD was 1.7%. The new method was used to quantify pentahydroxyflavones in plant tissue samples.

KW - Adsorption voltammetry

KW - Ionic liquids

KW - Multi-wall carbon nanotubes

KW - Pentahydroxyflavone

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U2 - 10.1016/j.jelechem.2015.11.008

DO - 10.1016/j.jelechem.2015.11.008

M3 - Artículo

AN - SCOPUS:84973312265

SN - 1572-6657

VL - 759

SP - 153

EP - 157

JO - Journal of Electroanalytical Chemistry

JF - Journal of Electroanalytical Chemistry

ER -

Determination of pentahydroxyflavones using coated chitosan multi-wall carbon nanotubes and an ionic liquid glassy carbon electrode by adsorption stripping voltammetry (AdSV)

Abstract

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Keywords

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