Measurement of hydrogen sulphide gas using fluorescence quenching

Ashutosh Sharma, Zulfiqur Ali

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    Abstract

    The quenching of the fluorescence of thionine by hydrogen sulphide 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, HCl, and NH3, were found to have no effect on thionine. Potential analytical applications of this discovery, including development of a fiberoptic H2 sensor, are discussed.
    Original languageEnglish
    Title of host publicationEnvironmental and process monitoring technologies
    Pages112-116
    DOIs
    Publication statusPublished - 1992
    EventEnvironmental and Process Monitoring Technologies Conference 1992 - Los Angeles, United States
    Duration: 20 Jan 199222 Jan 1992

    Conference

    ConferenceEnvironmental and Process Monitoring Technologies Conference 1992
    CountryUnited States
    CityLos Angeles
    Period20/01/9222/01/92

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    Sharma, A., & Ali, Z. (1992). Measurement of hydrogen sulphide gas using fluorescence quenching. In Environmental and process monitoring technologies (pp. 112-116) https://doi.org/10.1117/12.59351