Title
An ISFET-based anion sensor for the potentiometric detection of organic acids in liquid chromatography An ISFET-based anion sensor for the potentiometric detection of organic acids in liquid chromatography
Author
Publication type
article
Publication
Lausanne ,
Subject
Physics
Chemistry
Source (journal)
Sensors and actuators : B : chemical. - Lausanne
Volume/pages
67(2000) :3 , p. 294-299
ISSN
0925-4005
ISI
000088721100012
Carrier
E
Target language
English (eng)
Full text (Publishers DOI)
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). (C) 2000 Elsevier Science S.A. All rights reserved.
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