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. 2016 Aug:2016:1898-1901.
doi: 10.1109/EMBC.2016.7591092.

A graphene oxide pH sensor for wound monitoring

B Melai, P Salvo, N Calisi, L Moni, A Bonini, C Paoletti, T Lomonaco, V Mollica, R Fuoco, F Di Francesco

A graphene oxide pH sensor for wound monitoring

B Melai et al. Annu Int Conf IEEE Eng Med Biol Soc. 2016 Aug.

Abstract

This article describes the fabrication and characterization of a pH sensor for monitoring the wound status. The pH sensitive layer consists of a graphene oxide (GO) layer obtained by drop-casting 5 μΐ of GO dispersion onto the working electrode of a screen-printed substrate. Sensitivity was 31.8 mV/pH with an accuracy of 0.3 unit of pH. Open-circuit potentiometry was carried out to measure pH in an exudate sample. The GO pH sensor proved to be reliable as the comparison with results obtained from a standard glass electrode pH-meter showed negligible differences (<; 0.09 pH units in the worst case) for measurements performed over a period of 4 days.

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