Influence of plasticizer on the selectivity of nitrate-sensitive CHEMFETs

Stauthamer, W.P.R.V. and Engbersen, J.F.J. and Verboom, W. and Reinhoudt, D.N. (1994) Influence of plasticizer on the selectivity of nitrate-sensitive CHEMFETs. Sensors and Actuators B: Chemical, 17 (3). pp. 197-201. ISSN 0925-4005

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Abstract:	By chemical modification of an ion-sensitive field-effect transistor, a sensor (CHEMFET) has been developed whose sensitivity for nitrate has been tested. A plasticized poly(vinyl chloride) (PVC) membrane, which contains lipophilic tetra-n-octyl-ammonium ions, is responsible for the nitrate sensitivity of the device. This membrane has been attached physically on top of a pH-buffered hydrogel, which itself has been attached covalently to the gate oxide of the field-effect transistor. The influence of the plasticizer in the PVC membrane on the selectivity pattern of the CHEMFET for the detection of nitrate has been investigated.
Item Type:	Article
Copyright:	© 1994 Elsevier Science
Faculty:	Science and Technology (TNW)
Research Group:	Biomedical Chemistry (BMC) Molecular Nanofabrication (MNF)
Link to this item:	http://purl.utwente.nl/publications/12278
Official URL:	http://dx.doi.org/10.1016/0925-4005(93)00870-5
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