Measurement of ammonia gas using fluorescence quenching

Ashutosh Sharma, Zulfiqur Ali, Irving J. Higgins

    Research output: Chapter in Book/Report/Conference proceedingConference contribution

    3 Citations (Scopus)


    Fluorescence quenching of 9-amino acridine hydrochloride (9-AAH) by ammonia was found to be extremely efficient. Quenching data were analyzed using the Stern-Volmer relation. The method offers a limit of detection of 0.1 ppm over a useful range of 0 - 10 ppm. Fluorescence of the indicator 9-AAH showed a little or no interference from acidic gases, such as SO2, HCl, and H2S. The finding is considered to be of potential utility for the development of a fiber optic ammonia sensor and other methods of its quantitative determination.

    Original languageEnglish
    Title of host publicationProceedings of SPIE - The International Society for Optical Engineering
    PublisherPubl by Int Soc for Optical Engineering
    Number of pages5
    ISBN (Print)0819407836
    Publication statusPublished - 1 Jan 1992
    EventEnvironmental and Process Monitoring Technologies 1992 - Los Angeles, CA, USA
    Duration: 20 Jan 199222 Jan 1992


    ConferenceEnvironmental and Process Monitoring Technologies 1992
    CityLos Angeles, CA, USA


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