Photometric sensors based on sol-gel porous glass doped with organic reagents

O. Lev, B. I. Kuyavskaya, Y. Sacharov, C. Rottman, A. Kuselman, D. Avnir, M. Ottolenghi

Research output: Contribution to journalConference articlepeer-review

5 Scopus citations


A new class of sensitive disposable sensors for determination of trace concentrations of water pollutants has been developed. It utilizes porous transparent silica glasses doped with organic photometric reagents. The silica sensors are produced at room temperature by the sol-gel procedure, i.e. by hydrolysis followed by polycondensation of tetraalkoxysilanes. Thus, we produced porous glasses doped with organic photometric reagents for the determination of typical cations, anions, pH, oxidation agents (e.g. disinfection agents) as well as typical air pollutants. A mathematical model for a flat plate monolithic iron sensor was developed and the predicted calibration curves were compared with the experimental response.

Original languageAmerican English
Pages (from-to)357-366
Number of pages10
JournalProceedings of SPIE - The International Society for Optical Engineering
StatePublished - 1992
EventInternational Conference on Monitoring of Toxic Chemicals and Biomarkers 1992 - Berlin, Germany
Duration: 15 Jun 199219 Jun 1992

Bibliographical note

Publisher Copyright:
© 1992 SPIE. All rights reserved.


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