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Proceedings Paper

Tin dioxide based optical sensor for in water ppm detection of ammonia at room temperature
Author(s): M. Pisco; M. Consales; R. Viter; V. Smyntyna; S. Campopiano; M. Giordano; A. Cusano; Antonello Cutolo
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Paper Abstract

In this work, preliminary experimental results on the capability of a Metal Oxides (MOXs) based optical sensor to perform ammonia detection in water environments, at room temperature, are presented. Electro-spray pyrolisis technique has been used to deposit the SnO2 films on the distal end of standard Silica Optical Fibers (SOFs). Reflection spectra of the sensing probes have been measured in the range 1520-1620nm by using a tunable laser and an optical spectrum analyzer. Single wavelength reflectance measurements have been carried out to test the sensing performances for ammonia detection in the range 4-20 ppm. High sensitivity to the target analyte and fast response times have been observed. From the results obtained, a Limit Of Detection (LOD) as low as sub-ppm has been achieved.

Paper Details

Date Published: 23 May 2005
PDF: 4 pages
Proc. SPIE 5855, 17th International Conference on Optical Fibre Sensors, (23 May 2005); doi: 10.1117/12.623837
Show Author Affiliations
M. Pisco, Univ. of Sannio (Italy)
M. Consales, Univ. of Sannio (Italy)
R. Viter, Odessa National Univ. (Ukraine)
V. Smyntyna, Odessa National Univ. (Ukraine)
S. Campopiano, Univ. of Sannio (Italy)
M. Giordano, Institute for Composite and Biomedical Materials CNR (Italy)
A. Cusano, Univ. of Sannio (Italy)
Antonello Cutolo, Univ. of Sannio (Italy)

Published in SPIE Proceedings Vol. 5855:
17th International Conference on Optical Fibre Sensors
Marc Voet; Reinhardt Willsch; Wolfgang Ecke; Julian Jones; Brian Culshaw, Editor(s)

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