A graphene oxide pH sensor for wound monitoring.
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.
B
B
Melai
P
P
Salvo
N
N
Calisi
L
L
Moni
A
A
Bonini
C
C
Paoletti
T
T
Lomonaco
V
V
Mollica
R
R
Fuoco
F
F
Di Francesco
D004566:Electrodes; D006108:Graphite; D006801:Humans; D006863:Hydrogen-Ion Concentration; D010087:Oxides; D011199:Potentiometry; D014945:Wound Healing; D014947:Wounds and Injuries
D010087:Oxides; D006108:Graphite