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Proceedings Paper

Indicators for the optical measurement of sulphur dioxide gas
Author(s): Ashutosh Sharma; Zulfiqur Ali; Daniel McStay
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Paper Abstract

A number of fluorophores were investigated for their suitability to be employed as indicators in SO2 measurement. Several indicators, including PAll's, 5(and 6) carboxy-4'-5'-dimethyl fluorescein, new fuschin, hydrazine hydrochloride and chioropyridine hydrochloride, showed decrease in the fluorescence intensity with increase in SO2 concentration. Fluorescence quenching of benzopurpurin by 502 is found to be extremely efficient, with a little or no interference from the other toxic gases NH3 and H2S. These results are analyzed using Stem-Volmer relation. The fmding is considered to be of potential utility for the development of an improved fibre optic SO2 sensor/probe.

Paper Details

Date Published: 1 May 1992
PDF: 5 pages
Proc. SPIE 1637, Environmental and Process Monitoring Technologies, (1 May 1992); doi: 10.1117/12.59348
Show Author Affiliations
Ashutosh Sharma, Cranfield Institute of Technology (United Kingdom)
Zulfiqur Ali, Cranfield Institute of Technology (United Kingdom)
Daniel McStay, Cranfield Institute of Technology (United Kingdom)

Published in SPIE Proceedings Vol. 1637:
Environmental and Process Monitoring Technologies
Tuan Vo-Dinh, Editor(s)

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