Chemically modified ion-sensitive field-effect transistors: elimination of the liquid juction potential in a double sensor flow-injection analysis cell

Cobben, Peter L.H.M. and Egberink, Richard J.M. and Bomer, J.G. and Schouwenaar, Robert and Brzozka, Zbigniew and Bergveld, Piet and Reinhoudt, David N. and Bos, Martinus (1993) Chemically modified ion-sensitive field-effect transistors: elimination of the liquid juction potential in a double sensor flow-injection analysis cell. Analytica Chimica Acta, 276 (2). pp. 347-352. ISSN 0003-2670

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Abstract:	A flow-through cell was designed that can be used for flow-injection analysis with two chemically modified ion-sensitive field-effect transistors (CHEMFETs) in close proximity. This offers the possibility of a differential measurement without influence of the liquid junction potential. The differential signal of a potassium- and a sodium-selective CHEMFET responded in a Nernstian manner and selectively towards potassium in an excess (fixed) concentration of sodium. A highly lead-selective CHEMFET was used in the same flow cell in combination with a potassium-selective CHEMFET.
Item Type:	Article
Copyright:	© 1993 Elsevier Science
Research Group:	Supramolecular Chemistry and Technology (SMCT) Biomedical and Environmental Sensor systems (BIOS) Distributed and Embedded Systems (DIES)
Link to this item:	http://purl.utwente.nl/publications/12573
Official URL:	http://dx.doi.org/10.1016/0003-2670(93)80403-8
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