Influence of composition of zeolite/enzyme nanobiocomposites on analytical characteristics of urea biosensor based on ion-selective field-effect transistors

Autor: Soldatkin, O. O., Soy, E., Errachid, Abdelhamid, Jaffrezic-Renault, Nicole, Akata, B., Soldatkin, A. P., Dzyadevych, S. V.
Přispěvatelé: Lab Biomol Elect, National Academy of Sciences of Ukraine (NASU), Micro & Nanotechnologies Department, Middle E Technology University, SIMS - Surfaces-(bio)Interfaces - Micro & Nano Systèmes (2011-2014), Institut des Sciences Analytiques (ISA), Institut de Chimie du CNRS (INC)-Université Claude Bernard Lyon 1 (UCBL), Université de Lyon-Université de Lyon-Centre National de la Recherche Scientifique (CNRS)-Institut de Chimie du CNRS (INC)-Université Claude Bernard Lyon 1 (UCBL), Université de Lyon-Université de Lyon-Centre National de la Recherche Scientifique (CNRS), Cent Lab, Orta Dogu Teknik University, Institute of High Technologies [Kyiv], Taras Shevchenko National University of Kyiv
Jazyk: angličtina
Rok vydání: 2011
Předmět:
Zdroj: Sensor letters
7th Maghreb-Europe Meeting on Materials and Their Applications for Devices and Sensors (MADICA 2010)
7th Maghreb-Europe Meeting on Materials and Their Applications for Devices and Sensors (MADICA 2010), Oct 2010, Tabarka, Tunisia. Sensor letters, 9 (6), pp.2320-2326, 2011, ⟨10.1166/sl.2011.1809⟩
ISSN: 1546-198X
1546-1971
DOI: 10.1166/sl.2011.1809⟩
Popis: International audience; Zeolite/enzyme nanobiocomposites of different compositions were tested in this work for the improvement of biosensor analytical characteristics. The bioselective element based on urease immobilized by cross-linking with glutaraldehyde was used as a model. The working characteristics of biosensors based on various zeolite/enzyme nanocomposites were examined and compared with those of urease-based biosensors. An optimal concentration of zeolytes beta (BEA) in bioselective elements is determined to be 1.5%. It ensures as wide linear range of measurement without remarkable loss in biosensor sensitivity to urea. The BEA zeolite-based biosensors were shown to have better working parameters in comparison with those based on zeolites A (LTA). A decrease in biosensor sensitivity to heavy metal ions was demonstrated for all zeolites used, which testifies to probable increase in stability of urea measurement in real environmental samples.
Databáze: OpenAIRE
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