Glassy Carbon Paste Electrodes for the Determination of Fructosyl Valine

Chien, Hui-Ching; Chou, Tse‐Chuan

doi:10.1002/elan.200900384

Cited by 17 publications

(15 citation statements)

References 25 publications

(15 reference statements)

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“…Detailed procedures relating to GCPE electrode fabrication are given in our previous paper [12]. The reproducibility of the electrode was shown by the stability of the peak current during cyclic voltammetry in buffer and by the background current of the amperometric response.…”

Section: Cyclic Voltammetry In Phosphate Buffer For Sensing Fru-val Cmentioning

confidence: 99%

“…Glassy carbon paste was prepared by hand-mixing a 50/50 (w/w)% mixture of glassy carbon microparticles and mineral oil [12,14]. A bare GCPE was obtained by dropping the paste onto the ITO substrate.…”

Section: Sensing Electrode Preparationmentioning

confidence: 99%

“…Economical to produce glassy carbon paste electrodes (GCPE) have low background currents and a higher sensitivity for Fru-Val measurement than commercial glassy carbon electrodes (GCE) [12]. Therefore, in this study, we used a bare GCPE as the working electrode in a 3 mM FcBA buffer solution (pH 7.4) for Fru-Val determinations using an amperometric method in an enzyme-free assay.…”

Section: Introductionmentioning

confidence: 99%

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A Nonenzymatic Amperometric Method for Fructosyl‐Valine Sensing Using Ferroceneboronic Acid

Chien

Chou

2010

Electroanalysis

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Fructosyl valine (Fru-Val) is a glycosylated component of hemoglobin (HbA 1c ) that can serve as a diagnostic target for type 2 diabetes. While average blood glucose levels fluctuate significantly, the more stable levels of HbA 1c can serve as a better long-term diagnostic marker. Here a diagnostic system, incorporating an amperometric method, for detecting Fru-Val (at + 0.1 V vs. Ag/AgCl), using ferrocene boronic acid (FcBA) is presented. FcBA can complex diols, and has easily detectable redox properties. The boronic acid group in FcBA mediates complexation, while the Fe(II)/Fe(III) couple serves as a transducer. The diagnostic system, based on a miniaturized bare glassy carbon paste electrode (GCPE), has a fast response time.

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Section: Cyclic Voltammetry In Phosphate Buffer For Sensing Fru-val Cmentioning

confidence: 99%

Section: Sensing Electrode Preparationmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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A Nonenzymatic Amperometric Method for Fructosyl‐Valine Sensing Using Ferroceneboronic Acid

Chien

Chou

2010

Electroanalysis

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“…Electrochemical oxidation of FV on a bare glassy carbon paste electrode (GCPE) in the absence of an enzyme was reported by Chien et. al (Chien & Chou, 2010). The electrode was prepared by applying a glassy carbon microparticle paste on the ITO substrate using a baking process.…”

Section: Biosensors Based On Fructosyl Valine (Fv)mentioning

confidence: 99%

“…The supporting electrolyte was phosphate buffer (pH 7.4), the operating potential was +1.0 V (vs. Ag/AgCl) with the measurements being made at ambient temperature. Inset: Calibration curve obtained for different concentrations of FV (Chien & Chou, 2010).…”

Section: Biosensors Based On Fructosyl Valine (Fv)mentioning

confidence: 99%

Electrochemical Biosensor for Glycated Hemoglobin (HbA1c)

Chen¹,

Pritzker²,

Sheikholeslam³

2011

Biosensors for Health, Environment and Biosecurity

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Effect of Ionic Liquid Structure on the Electrochemical Response of Dopamine at Room Temperature Ionic Liquid‐modified Carbon Paste Electrodes (IL–CPE)

2020

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In this work 12 different ionic liquids (ILs) have been used added as co‐binders in the preparation of modified carbon paste electrodes (IL–CPEs) used for the voltammetric analysis of dopamine in Britton‐Robinson buffer. The ionic liquids studied were selected based on three main criteria: (1) increasing chain length of alkyl substituents (studying 1‐ethylimidazolium and ethyl, propyl, butyl, hexyl and decylmethylimidazolium bis(trifluoromethylsulfonyl)imide ionic liquids); (2) nature of the counter ion (dicyanamide, bis(trifluoromethylsulfonyl)imide and hexafluorophosphate) in 1‐butyl‐3‐methylimidazolium ionic liquids; and (3) cation ring structures (1‐butyl‐3‐methylimidazolium, 1‐butyl‐1‐methylpiperidinium, 1‐butyl‐1‐methylpyrrolidinium and 1‐butyl‐3‐methylpyridinium) in bis(trifluoromethylsulfonyl)imide or hexafluorophosphate (1‐butyl‐3‐methylimidazolium or 1‐butyl‐3‐methylpyridinium as cations) ionic liquids. The use of IL as co‐binders in IL–CPE results in a general enhancement of both the sensitivity and the reversibility of dopamine oxidation. In square wave voltammetry experiments, the peak current increased up to a 400 % when 1‐ethyl‐3‐methylimidazolium bis(trifluoromethylsulfonyl)imide was used as co‐binder, as compared to the response found with the unmodified CPE. Experimental data provide evidence that electrostatic and steric effects are the most important ones vis‐à‐vis these electrocatalytic effects on the anodic oxidation of dopamine on IL–CPE. The relative hydrophilicity of dicyanamide anions reduced the electrocatalytic effects of the corresponding ionic liquids, while the use of 1‐ethyl‐3‐methylimidazolium hexafluorophosphate or 1‐ethyl‐3‐methylimidazolium bis(trifluoromethylsulfonyl)imide (two relatively small and highly hydrophobic ionic liquids) as co‐binders in IL–CPE resulted in the highest electrocatalytic activity among all of the IL–CPE studied.

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Glassy Carbon Paste Electrodes for the Determination of Fructosyl Valine

Cited by 17 publications

References 25 publications

A Nonenzymatic Amperometric Method for Fructosyl‐Valine Sensing Using Ferroceneboronic Acid

A Nonenzymatic Amperometric Method for Fructosyl‐Valine Sensing Using Ferroceneboronic Acid

Electrochemical Biosensor for Glycated Hemoglobin (HbA1c)

Effect of Ionic Liquid Structure on the Electrochemical Response of Dopamine at Room Temperature Ionic Liquid‐modified Carbon Paste Electrodes (IL–CPE)

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