Rhodium and Its Compounds in Amperometric Biosensors Based on Redox Enzymes

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216275%3A25310%2F11%3A39892608" target="_blank" >RIV/00216275:25310/11:39892608 - isvavai.cz</a>

Výsledek na webu

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DOI - Digital Object Identifier

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Jazyk výsledku

angličtina

Název v původním jazyce

Rhodium and Its Compounds in Amperometric Biosensors Based on Redox Enzymes

Popis výsledku v původním jazyce

Catalytic properties of rhodium and some of its salts, namely, RhO2, Rh2O3 and chlorobis(2-phenylpyridine)rhodium(III) dimer (CFPRD) were tested as mediators/catalysts of electron transfer in electrochemical biosensors for the determination of glucose. Measurements were realized using flow injection system and screen-printed carbon electrodes containing glucose oxidase as a model redox enzyme. Sensors with RhO2 was found the best exhibiting a linear increase of the amperometric signal for glucose concentrations in the range of 5.5x10-5 - 1.4x10-3 M with a detection limit of 2.2x10-5 M under optimized flow rate of 0.2 mL min-1 in 0.1 M phosphate buffer (pH 7.5) carrier. A metal rhodium-based sensor exhibited a linear increase in the range of 2.8x10-4 -1.4x10-3 M, a sensor modified with Rh2O3 showed similar linear dependence in the range of 1.4x10-3 - 5.5x10-3 M. Concerning sensors modified with CFPRD, a linear concentration dependence was observed in the range of 5.5x10-3 - 2.8x10-2 M.

Název v anglickém jazyce

Rhodium and Its Compounds in Amperometric Biosensors Based on Redox Enzymes

Popis výsledku anglicky

Catalytic properties of rhodium and some of its salts, namely, RhO2, Rh2O3 and chlorobis(2-phenylpyridine)rhodium(III) dimer (CFPRD) were tested as mediators/catalysts of electron transfer in electrochemical biosensors for the determination of glucose. Measurements were realized using flow injection system and screen-printed carbon electrodes containing glucose oxidase as a model redox enzyme. Sensors with RhO2 was found the best exhibiting a linear increase of the amperometric signal for glucose concentrations in the range of 5.5x10-5 - 1.4x10-3 M with a detection limit of 2.2x10-5 M under optimized flow rate of 0.2 mL min-1 in 0.1 M phosphate buffer (pH 7.5) carrier. A metal rhodium-based sensor exhibited a linear increase in the range of 2.8x10-4 -1.4x10-3 M, a sensor modified with Rh2O3 showed similar linear dependence in the range of 1.4x10-3 - 5.5x10-3 M. Concerning sensors modified with CFPRD, a linear concentration dependence was observed in the range of 5.5x10-3 - 2.8x10-2 M.

Druh

J_x - Nezařazeno - Článek v odborném periodiku (Jimp, Jsc a Jost)

CEP obor

CG - Elektrochemie

OECD FORD obor

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Projekt

<a href="/cs/project/GA203%2F08%2F1536" target="_blank" >GA203/08/1536: Progresívní metody v chemické, potravinářské a klinické analýze</a><br>

Návaznosti

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)<br>Z - Vyzkumny zamer (s odkazem do CEZ)

Rok uplatnění

2011

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název periodika

International Journal of Electrochemical Science

ISSN

1452-3981

e-ISSN

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Svazek periodika

6

Číslo periodika v rámci svazku

1

Stát vydavatele periodika

CS - Srbsko a Černá Hora

Počet stran výsledku

9

Strana od-do

231-239

Kód UT WoS článku

000285788700018

EID výsledku v databázi Scopus

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