An ISFET-based anion sensor for the potentiometric detection of organic acids in liquid chromatography
نویسندگان
چکیده
Ž . Ž . An ion-selective field effect transistor ISFET was applied as a potentiometric detector in liquid chromatography LC for the Ž determination of organic acids. The ISFET was prepared by coating the gate insulator of the encapsulated transistor with a poly vinyl . Ž . 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 Ž . Ž . characteristics were compared to those of a coated-wire electrode CWE and of a conventional type of ion-selective electrode ISE . q 2000 Elsevier Science S.A. All rights reserved.
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