Sensitive cyclodextrin-polysiloxane gel membrane on EIS structure and ISFET for heavy metal ion detection

Citation
M. Ben Ali et al., Sensitive cyclodextrin-polysiloxane gel membrane on EIS structure and ISFET for heavy metal ion detection, SENS ACTU-B, 62(3), 2000, pp. 233-237
Citations number
29
Categorie Soggetti
Spectroscopy /Instrumentation/Analytical Sciences","Instrumentation & Measurement
Journal title
SENSORS AND ACTUATORS B-CHEMICAL
ISSN journal
09254005 → ACNP
Volume
62
Issue
3
Year of publication
2000
Pages
233 - 237
Database
ISI
SICI code
0925-4005(20000310)62:3<233:SCGMOE>2.0.ZU;2-2
Abstract
Cylodextrin (CD)-polysiloxane gel matrices are used to functionalize EIS (E lectrolyte Insulator Semiconductor structure) and ISFET (Ion-Sensitive Fiel d Transistor) devices. Electrochemical measurements were made to study the sensitivity and the selectivity of this sensitive membrane towards heavy me tal ions. For both structures, a Nernstian response and good detection limi t of an alpha CD gel membrane towards Cd2+ ion and for a beta CD towards Pb 2+ ion were obtained. The selectivity with respect to other cations are giv en through the potentiometric selectivity coefficients (K-ij) (C) 2000 Else vier Science S.A. All rights reserved.