Jump to main content
Jump to site search

Issue 104, 2016, Issue in Progress
Previous Article Next Article

Impedimetric blood pH sensor based on MoS2–Nafion coated microelectrode

Author affiliations

Abstract

Ion selective electrodes are a good alternative to glass-based pH sensors to replace traditional bulky pH sensors with compact and robust point of care analyzers. This is especially important for healthcare applications, as the pH-sensing element of hand-held blood gas analyzers to aid blood gas analysis in remote or mobile medical set ups. In this work, we have presented an impedimetric pH sensor consisting of parallel coplanar electrodes of aluminum coated with molybdenum disulfide (MoS2) nanoparticles and Nafion as a permselective layer. This sensor showed a sensitivity of 6193 Ω pH−1 and a response time of 4 s on testing with Sorensen’s phosphate buffers at different pH values, used as a physiological buffer. A preliminary study of the sensor with capillary blood shows that its estimated pH lies close to that of the venous blood pH, thus showcasing good characteristics to be a potential candidate for the pH-sensing element of a point of care analyzer.

Graphical abstract: Impedimetric blood pH sensor based on MoS2–Nafion coated microelectrode

Back to tab navigation
Please wait while Download options loads

Publication details

The article was received on 12 Jul 2016, accepted on 10 Oct 2016 and first published on 10 Oct 2016


Article type: Paper
DOI: 10.1039/C6RA17786G
Citation: RSC Adv., 2016,6, 102088-102095
  •   Request permissions

    Impedimetric blood pH sensor based on MoS2–Nafion coated microelectrode

    P. Awasthi, R. Mukherjee, S. P. O Kare and S. Das, RSC Adv., 2016, 6, 102088
    DOI: 10.1039/C6RA17786G

Search articles by author