Measurement of hydrogen sulphide gas using fluorescence quenching

Ashutosh Sharma; Zulfiqur Ali

doi:10.1117/12.59351

1 May 1992 Measurement of hydrogen sulphide gas using fluorescence quenching

Ashutosh Sharma, Zulfiqur Ali

Proceedings Volume 1637, Environmental and Process Monitoring Technologies; (1992) https://doi.org/10.1117/12.59351
Event: OE/LASE '92, 1992, Los Angeles, CA, United States

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.

Citation Download Citation

Ashutosh Sharma and Zulfiqur Ali "Measurement of hydrogen sulphide gas using fluorescence quenching", Proc. SPIE 1637, Environmental and Process Monitoring Technologies, (1 May 1992); https://doi.org/10.1117/12.59351

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