Please use this identifier to cite or link to this item: http://repositorio.unicamp.br/jspui/handle/REPOSIP/66373
Type: Artigo de periódico
Title: Experimental evidence of the chaotic regime in a salicylate biosensor
Author: Kubota, LT
Kleinke, MU
Mello, C
Bueno, MI
Neto, GD
Abstract: In a biosensor for salicylate, developed using a modified carbon paste electrode with silica gel coated with Meldola's Blue and salicylate hydroxylase, the current time series presented a complex oscillatory pattern, for salicylate and NADH concentrations close to 2.0 X 10(-5) and 3.6 X 10(-5) mol l(-1), respectively. These experimental results suggest that the biosensor response presents chaotic characteristics. The complex temporal behavior of these series was diagnosed as deterministic chaos by measurement of the Grassberger-Procaccia dimension, and the calculation of the first Lyapunov exponent. The value determined for the correlational dimension is lower than 5. These results suggest a coupling of five or six differential equations to describe the redox reactions of the biosensor system.
Country: Holanda
Editor: Elsevier Science Bv
Rights: fechado
Identifier DOI: 10.1016/S0009-2614(96)01391-7
Date Issue: 1997
Appears in Collections:Artigos e Materiais de Revistas Científicas - Unicamp

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