Measurement of hydrogen sulphide gas using fluorescence quenching
Open Access
- 1 May 1992
- proceedings article
- Published by SPIE-Intl Soc Optical Eng
- Vol. 1637, 112-117
- https://doi.org/10.1117/12.59351
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.Keywords
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