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Dry Film Photoresist-based Electrochemical Microfluidic Biosensor Platform: Device Fabrication, On-chip Assay Preparation, and System Operation

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Development of an amperometric biosensor for phenol detection.

L M C Silva¹, A M Salgado, M A Z Coelho

¹Department of Biochemical Engineering, School of Chemistry, Federal University of Rio de Janeiro (UFRJ), E-122, University City, CEP 21949-909, Rio de Janeiro, Brazil.

Environmental Technology

|September 1, 2011

Summary

A novel biosensor using Agaricus bisporus mushroom tissue was developed for in situ phenol monitoring. The biosensor achieved optimal performance with 5g of tissue and a 1-minute reaction time for phenol detection.

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Area of Science:

Biotechnology
Environmental Science
Analytical Chemistry

Background:

Phenol is a common pollutant requiring effective monitoring methods.
Existing phenol detection methods may not be suitable for in situ analysis.
Biosensors offer a promising approach for real-time environmental monitoring.

Purpose of the Study:

To develop an in situ biosensor for phenol detection.
To utilize Agaricus bisporus tissue as a biocomponent for phenol monitoring.
To optimize biosensor parameters for reliable phenol concentration measurement.

Main Methods:

Development of a biosensor using Agaricus bisporus tissue and an oxygen electrode.
Investigation of the relationship between dissolved oxygen and phenol concentration.
Evaluation of biosensor calibration by varying reaction time and tissue amount.
Assessment of the influence of air saturation and electrode washing on biosensor performance.

Main Results:

The optimal biosensor configuration involved 5g of mushroom tissue and a 1-minute reaction time.
The biosensor demonstrated reliable performance within a phenol concentration range of 5-10 ppm.
Washing the electrode did not significantly impact the analysis.
Initial air saturation of the sample reduced variations in measurements.

Conclusions:

A functional biosensor for in situ phenol monitoring was successfully developed.
The biosensor provides a reliable method for detecting phenol in the 5-10 ppm range.
Optimized conditions enhance the accuracy and consistency of phenol measurements.