THIN-FILMS OF CHALCOGENIDE GLASS AS SENSITIVE MEMBRANES FOR THE DETECTION OF MERCURIC IONS IN SOLUTION

Authors
GUESSOUS A PAPET P SARRADIN J RIBES M
Citation
A. Guessous et al., THIN-FILMS OF CHALCOGENIDE GLASS AS SENSITIVE MEMBRANES FOR THE DETECTION OF MERCURIC IONS IN SOLUTION, Sensors and actuators. B, Chemical, 24(1-3), 1995, pp. 296-299
Citations number
8
Categorie Soggetti
Engineering, Eletrical & Electronic","Instument & Instrumentation
Journal title
Sensors and actuators. B, Chemical → ACNP
ISSN journal
09254005
Volume
24
Issue
1-3
Year of publication
1995
Pages
296 - 299
Database
ISI
SICI code
0925-4005(1995)24:1-3<296:TOCGAS>2.0.ZU;2-L
Abstract
Thin vitreous films elaborated by microelectronic techniques can be us ed to build up sensitive microsystems in order to detect ionic species (Hg2+) in aqueous solution. Characteristics of sensing systems based on thin films of chalcogenide glasses are presented. The microsensors exhibit quasi-Nernstian potentiometric response over five orders of ma gnitude with a limit of detection below 10(-6) mol l(-1) In the presen ce of interfering heavy-metal ions (Pb2+, Cd2+) the sensing systems ar e very selective, since low selectivity coefficients are obtained vers us those ionic species.