Abstract
Simple and effective organic biosensors sensitive to organic peroxides such as 2-butanone per-oxide and tertbutyl hydroperoxide are constructed by immobilizing a series of redox organic dyes and horseradish peroxidase in Eastman-AQ polymer film. The organic dyes are methylene blue, methylene green, meldola blue, new methylene blue N and N-methyl phenazine methosulphate. The biosensors display high sensitivity and fast response to tertbubtyl hydroperoxide and 2-butanone peroxide because of high efficiency of electron transfer between immobilized horseradish peroxidase and the electrode via the redox organic dyes. The comparison of the biosensors employing different organic dyes is made in formal potential, linear range and response time.
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