INVESTIGATION OF THE STABILITY OF AN OPTOCHEMICAL NITRATE SENSOR

Authors
HEINZMANN G CZOLK R ACHE HJ
Citation
G. Heinzmann et al., INVESTIGATION OF THE STABILITY OF AN OPTOCHEMICAL NITRATE SENSOR, Sensors and actuators. B, Chemical, 18(1-3), 1994, pp. 47-50
Citations number
5
Categorie Soggetti
Engineering, Eletrical & Electronic","Instument & Instrumentation
Journal title
Sensors and actuators. B, Chemical → ACNP
ISSN journal
09254005
Volume
18
Issue
1-3
Year of publication
1994
Pages
47 - 50
Database
ISI
SICI code
0925-4005(1994)18:1-3<47:IOTSOA>2.0.ZU;2-2
Abstract
The stability of optochemical nitrate sensors based on immobilized pH indicators in hydrophobic membranes was investigated. The chemical str ucture of the pH indicator (i.e., chromoionophore) was found to affect the stability as well as the pH-operation range of the sensor. Differ ent matrices were tested for the immobilization of the sensing compoun ds, and the influence of continuous sensor operation on its properties was proofed.