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Sensors 2008, 8(12), 8237-8247; doi:10.3390/s8128237
Article

Eliminating the Interference of Oxygen for Sensing Hydrogen Peroxide with the Polyaniline Modified Electrode

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Received: 19 October 2008; in revised form: 24 November 2008 / Accepted: 10 December 2008 / Published: 12 December 2008
(This article belongs to the Section Physical Sensors)
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Abstract: Polyaniline (PANI) has been shown to possess excellent catalytic activity toward oxygen reduction, however, this molecule may interfere with the electrochemical measurement of other targets when using a polyaniline modified platinum (PANI/Pt) electrode. In this study, we have demonstrated the considerable effects of dissolved oxygen on the sensing of hydrogen peroxide with the PANI/Pt electrode. Accordingly, we proposed a strategy to eliminate the influence of dissolved oxygen with oxygen scavengers. Our results indicated that as an oxygen scavenger sodium thiosulfate was very effective in the removal of dissolved oxygen from the sample solution, and had negligible effect on the quantification of hydrogen peroxide when its applied concentration was below 1 mM.
Keywords: Amperometric electrode; polyaniline; hydrogen peroxide; oxygen scavenger Amperometric electrode; polyaniline; hydrogen peroxide; oxygen scavenger
This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

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MDPI and ACS Style

Gu, Y.; Chen, C.-C. Eliminating the Interference of Oxygen for Sensing Hydrogen Peroxide with the Polyaniline Modified Electrode. Sensors 2008, 8, 8237-8247.

AMA Style

Gu Y, Chen C-C. Eliminating the Interference of Oxygen for Sensing Hydrogen Peroxide with the Polyaniline Modified Electrode. Sensors. 2008; 8(12):8237-8247.

Chicago/Turabian Style

Gu, Yesong; Chen, Chien-Chung. 2008. "Eliminating the Interference of Oxygen for Sensing Hydrogen Peroxide with the Polyaniline Modified Electrode." Sensors 8, no. 12: 8237-8247.



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