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    Beryllium Measurement by Optical Fluorescence in Samples Contaminated by Strongly Fluorescent Impurities

    Published: 01 January 2011

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    A fluorescence method for determination of beryllium and beryllium oxide particles has been approved as a standard test method by ASTM International and the National Institute for Occupational Safety and Health. The procedure involves dissolution of samples in ammonium bifluoride solution and adding a small aliquot of extract to a basic hydroxybenzoquinoline sulfonate fluorescent dye and measuring its fluorescence. This method is specific to beryllium and is not affected by the presence of other metals. However, the results from such a method may be compromised by organic fluorescent impurities which have optical characteristics similar to the beryllium-bonded hydroxybenzoquinoline sulfonate. This study demonstrates that such impurities can be effectively removed by activated charcoal without compromising the sensitivity of the method or any other test attributes.

    Author Information:

    Agrawal, Anoop
    Berylliant Inc., Tucson, AZ

    Adams, Lori
    Berylliant Inc., Tucson, AZ

    Agrawal, Akshay
    Berylliant Inc., Tucson, AZ

    Cronin, John P.
    Berylliant Inc., Tucson, AZ

    Tonazzi, Juan Carlos Lopez
    Berylliant Inc., Tucson, AZ

    Duran, Brandy
    Los Alamos National Laboratory, NM

    Committee/Subcommittee: D22.04

    DOI: 10.1520/STP49748S