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Proceedings Paper

Measurement of hydrogen sulphide gas using fluorescence quenching
Author(s): Ashutosh Sharma; Zulfiqur Ali
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Paper Abstract

The quenching of the fluorescence of thionine by hydrogen suiphide is reported. The extremely efficient quenching process is attributed to reversible reduction of the thionine dye both in the ground and the excited state leading to the formation of a non-fluorescent semi/leuko thionine. Other toxic gases, namely SO2, HC1 and NH3, were found to have no effect on thionine. Potential analytical applications of this discovery, including development of a fiberoptic H2S sensor, are discussed.

Paper Details

Date Published: 1 May 1992
PDF: 5 pages
Proc. SPIE 1637, Environmental and Process Monitoring Technologies, (1 May 1992); doi: 10.1117/12.59351
Show Author Affiliations
Ashutosh Sharma, Cranfield Institute of Technology (United Kingdom)
Zulfiqur Ali, 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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