An ISFET-based anion sensor for the potentiometric detection of organic acids in liquid chromatography

Poels, I. and Schasfoort, R.B.M. and Picioreanu, S. and Frank, J. and Dedem van, G.W.K. and Berg van den, A. and Nagels, L.J. (2000) An ISFET-based anion sensor for the potentiometric detection of organic acids in liquid chromatography. Sensors and Actuators B: Chemical, 67 (3). pp. 294-299. ISSN 0925-4005

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Abstract:	An ion-selective field effect transistor (ISFET) was applied as a potentiometric detector in liquid chromatography (LC) for the determination of organic acids. The ISFET was prepared by coating the gate insulator of the encapsulated transistor with a poly(vinyl chloride) (PVC) matrix membrane containing methyltridodecylammoniumchloride, which enables the detection of organic anions. The ISFET was tested for its applicability as detector for carboxylic acids in ion-exchange and reversed-phase chromatography. Its analytical characteristics were compared to those of a coated-wire electrode (CWE) and of a conventional type of ion-selective electrode (ISE).
Item Type:	Article
Copyright:	© 2000 Elsevier
Faculty:	Science and Technology (TNW) Electrical Engineering, Mathematics and Computer Science (EEMCS)
Research Group:	Medical Cell BioPhysics (MCBP) Biomedical and Environmental Sensor systems (BIOS)
Link to this item:	http://purl.utwente.nl/publications/14644
Official URL:	http://dx.doi.org/10.1016/S0925-4005(00)00531-1
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