Potassium-selective conductometric sensor

Authors
Shvarev, AE Rantsan, DA Mikhelson, KN
Citation
Ae. Shvarev et al., Potassium-selective conductometric sensor, SENS ACTU-B, 76(1-3), 2001, pp. 500-505
Citations number
17
Categorie Soggetti
Spectroscopy /Instrumentation/Analytical Sciences","Instrumentation & Measurement
Journal title
SENSORS AND ACTUATORS B-CHEMICAL
ISSN journal
09254005 → ACNP
Volume
76
Issue
1-3
Year of publication
2001
Pages
500 - 505
Database
ISI
SICI code
0925-4005(20010601)76:1-3<500:PCS>2.0.ZU;2-8
Abstract
Potassium-selective membranes known as sensing modules for potentiometric i on-selective electrodes are studied in ac-impedance mode. It is shown that the bulk resistance of thin (20-250 mum) membranes depends on the compositi on of aqueous bathing solution. The results are explained in terms of surfa ce conductivity in space-charge region, in the vicinity of water microdropl ets in membranes. A planar potassium-selective sensor with a conductometric signal is proposed. (C) 2001 Elsevier Science B.V. All rights reserved.