Exploitation of a pH-sensitive hydrogel disk for CO2 detection

Share/Save/Bookmark

Herber, S. and Olthuis, W. and Bergveld, P. and Berg van den, A. (2004) Exploitation of a pH-sensitive hydrogel disk for CO2 detection. Sensors and Actuators B: Chemical, 103 (1-2). pp. 284-289. ISSN 0925-4005

[img]PDF
Restricted to UT campus only
: Request a copy
250Kb
Abstract:In this paper is described how hydrogel is exploited as sensor material for the detection of carbon dioxide (CO2). A pH-sensitive hydrogel disk, which swells and deswells in response to pH changes, was clamped between a pressure sensor membrane and a porous metal screen together with a bicarbonate solution. CO2 reacts with the bicarbonate solution resulting in a pH change, which is converted into a pressure by the enclosed hydrogel. This pressure is a measure for the partial pressure of CO2. The main advantage of this sensor principle is the fact that a reference electrode as required for potentiometric sensors is no longer needed.
Item Type:Article
Copyright:© 2004 Elsevier
Faculty:
Electrical Engineering, Mathematics and Computer Science (EEMCS)
Research Group:
Link to this item:http://purl.utwente.nl/publications/47853
Official URL:http://dx.doi.org/10.1016/j.snb.2004.04.113
Export this item as:BibTeX
EndNote
HTML Citation
Reference Manager

 

Repository Staff Only: item control page

Metis ID: 218790