Determination of Hydrogen Peroxide, Glucose and Hypoxanthine using (Bio)Sensors Based on Ruthenium Dioxide‐Modified Screen‐Printed Electrodes

Kotzian, Petr; Brázdilová, Petra; Kalcher, Kurt; Vytřas, Karel

doi:10.1081/al-200057205

Cited by 40 publications

(15 citation statements)

References 28 publications

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“…These results are in a good agreement to those obtained recently with both manganese and ruthenium dioxides [24,26]. The electrode exhibited an excellent sensitivity of 64 mA mM À1 cm…”

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confidence: 93%

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Amperometric Glucose Biosensor Based on Rhodium Dioxide‐Modified Carbon Ink

et al. 2006

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An amperometric method for the determination of glucose using a screen printed carbon electrode is reported. The electrode material was bulk modified with rhodium dioxide and the enzyme glucose oxidase immobilized in a Nafionfilm on the electrode surface and investigated for its ability to serve as a detector of glucose in flow injection analysis. The sensor exhibited a linear increase of the amperometric signal with the concentration of glucose in the range of 1 -250 mg L À1 with a detection limit (evaluated as 3s) of 0.2 mg L À1 under optimized flow rate of 0.4 mL min À1 in 0.1 M phosphate buffer (pH 7.5) carrier. At the potential applied (À 0.2 V vs. Ag/AgCl), interferences from redox species present in the sample matrix were negligible. The biosensor reported here retained its activity for more than 40 injections or 4 months of storage at 6 8C. The RSD was determined as 1.8% for a glucose concentration of 25 mg L À1(n ¼ 5) with a typical response time of about 28 s.

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“…These results are in a good agreement to those obtained recently with both manganese and ruthenium dioxides [24,26]. The electrode exhibited an excellent sensitivity of 64 mA mM À1 cm…”

supporting

confidence: 93%

“…Recent studies have demonstrated the suitability of such modification of SPCEs with metal oxides, e.g., manganese dioxide [24] or ruthenium dioxide [25,26] in procedures developed to determine glucose or other biological compounds.…”

Section: Introductionmentioning

confidence: 99%

Amperometric Glucose Biosensor Based on Rhodium Dioxide‐Modified Carbon Ink

et al. 2006

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“…These include clays, transition metal oxides [4,5] and polynuclear transition metal hexacyanometallates [6]. The use of Prussian Blue (PB) and its analogues, which exhibit strong electrocatalytic activity, well-defined redox transitions and related electrochromicity [7] has been particularly successful.…”

Section: Introductionmentioning

confidence: 99%

Response Behavior of Amperometric Glucose Biosensors Based on Different Carbon Substrate Transducers Coated with Enzyme‐Active Layer: A Comparative Study

2009

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Carbon electrodes (glassy carbon, GC, screen-printed carbon, SPC, and carbon fiber, CF) were used as substrate transducers to prepare glucose biosensors of different sizes and geometries, based on iron-ruthenium hexacyanoferrate as H 2 O 2 reduction mediator and glucose oxidase immobilized in a poly(1,2-phenylenediamine) membrane. Their response behavior under hydrodynamic amperometric conditions at an operating potential of À 0.02 V vs. Ag/AgCl was studied and compared. While the GC and SPC based conventional size biosensors showed enzymatic catalysis controlled current response with nonlinear concentration dependence, the CF based micro-biosensor exhibited, due to diffusion-controlled current response, extended linear range calibration curves with relatively lower sensitivity and longer response times. Several preparation parameters responsible for the improvement of biosensor performance were also investigated.

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“…Different modifiers were investigated on their ability to decrease overpotentials of hydrogen peroxide on carbon paste electrodes, such as iron and platinum metal or other transition metal oxides or complexes or organic compounds [4]. Metal oxides such as MnO 2 [5], CuO [6], Fe 2 O 3 [7], RhO 2 [8], RuO 2 [9], ReO 2 [10] were found suitable for this purpose.Our research in this study is focused on the possibilities of carbon-based heterogeneous electrodes modified with tin (IV) oxide for the detection of hydrogen peroxide and its potential application as a glucose biosensor through glucose glucose oxidase/ Nafion entrapment on the electrode surface.…”

Section: Introductionmentioning

confidence: 99%

A New Biosensor for Glucose Based on Screen Printed Carbon Electrodes Modified with Tin (IV)-Oxide

Berisha¹,

Kalcher²,

Hajrizi³

et al. 2013

AJAC

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Tin (IV) oxide was used as a bulk mediator in carbon paste and carbon ink screen-printed electrodes to improve the better performance of the carbon electrodes for the detection of hydrogen peroxide in comparison with unmodified electrodes. A new glucose biosensor developed from modified carbon paste electrode and coated with glucose oxidase entrapped in Nafion was investigated with a flow injection system. The biosensor could be operated under physiological conditions (pH 7.5, 0.1 M phosphate buffer), with an operating potential of −200 mV (vs. Ag/AgCl), a flow rate of the carrier of 0.2 mL/min. and an injection volume of 100 μL. The amperometric response of the biosensor showed good linearity up to 200 mg/L with a detection limit (3σ) of 6.8 mg/L. The relative standard deviation for the repeatability of measurements for 100 mg/L glucose was 2.9% (n = 10 measurements) and the corresponding reproducibility was 12% (n = 5 sensors). The effect of all investigated interferences (uric acid, paracetamol, xanthine, hypoxanthine and ascorbic acid) was not fatal and could be eliminated by the use of the standard addition method. The new biosensor was successfully applied to the determination of glucose in human blood plasma.

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Determination of Hydrogen Peroxide, Glucose and Hypoxanthine using (Bio)Sensors Based on Ruthenium Dioxide‐Modified Screen‐Printed Electrodes

Cited by 40 publications

References 28 publications

Amperometric Glucose Biosensor Based on Rhodium Dioxide‐Modified Carbon Ink

Amperometric Glucose Biosensor Based on Rhodium Dioxide‐Modified Carbon Ink

Response Behavior of Amperometric Glucose Biosensors Based on Different Carbon Substrate Transducers Coated with Enzyme‐Active Layer: A Comparative Study

A New Biosensor for Glucose Based on Screen Printed Carbon Electrodes Modified with Tin (IV)-Oxide

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