Sensors 2013, 13(4), 5028-5039; doi:10.3390/s130405028

Optimization of Hydrogen Peroxide Detection for a Methyl Mercaptan Biosensor

1 State Key Laboratory of Physical Chemistry of Solid Surfaces, and Department of Chemistry, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen 361005, China 2 Laboratoire IMAGES EA 4218, Groupe Biocapteurs, Université de Perpignan Via Domitia (UPVD), Bâtiment S, 52 av Paul Alduy 66860 Perpignan Cedex, France
* Author to whom correspondence should be addressed.
Received: 11 March 2013; in revised form: 3 April 2013 / Accepted: 7 April 2013 / Published: 15 April 2013
(This article belongs to the Special Issue Enzymatic Biosensors)
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Abstract: Several kinds of modified carbon screen printed electrodes (CSPEs) for amperometric detection of hydrogen peroxide (H2O2) are presented in order to propose a methyl mercaptan (MM) biosensor. Unmodified, carbon nanotubes (CNTs), cobalt phthalocyanine (CoPC), Prussian blue (PB), and Os-wired HRP modified CSPE sensors were fabricated and tested to detect H2O2, applying a potential of +0.6 V, +0.6 V, +0.4 V, −0.2 V and −0.1 V (versus Ag/AgCl), respectively. The limits of detection of these electrodes for H2O2 were 3.1 μM, 1.3 μM, 71 nM, 1.3 μM, 13.7 nM, respectively. The results demonstrated that the Os-wired HRP modified CSPEs gives the lowest limit of detection (LOD) for H2O2 at a working potential as low as −0.1 V. Os-wired HRP is the optimum choice for establishment of a MM biosensor and gives a detection limit of 0.5 μM.
Keywords: methyl mercaptan; hydrogen peroxide; amperometric sensor; screen printed electrode

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MDPI and ACS Style

Li, Z.-H.; Guedri, H.; Viguier, B.; Sun, S.-G.; Marty, J.-L. Optimization of Hydrogen Peroxide Detection for a Methyl Mercaptan Biosensor. Sensors 2013, 13, 5028-5039.

AMA Style

Li Z-H, Guedri H, Viguier B, Sun S-G, Marty J-L. Optimization of Hydrogen Peroxide Detection for a Methyl Mercaptan Biosensor. Sensors. 2013; 13(4):5028-5039.

Chicago/Turabian Style

Li, Zhan-Hong; Guedri, Houssemeddine; Viguier, Bruno; Sun, Shi-Gang; Marty, Jean-Louis. 2013. "Optimization of Hydrogen Peroxide Detection for a Methyl Mercaptan Biosensor." Sensors 13, no. 4: 5028-5039.

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