ASTM WK42422

    New Test Method for the Determination of Ammonia Nitrogen by Automated Gas Diffusion and Colorimetric Detection

    (What is a Work Item?)

    Developed by Subcommittee: D19.05 | Committee D19 | Contact Staff Manager


    1. Scope

    This test method determines ammonia nitrogen in aqueous samples and extracts by continuous flow analysis. A preliminary, automated gas diffusion step selectively separates ammonia from the sample matrix prior to colorimetric determination by the Berthelot reaction. The gas diffusion step eliminates the need for steam distillation.

    This standard will be developed with the intent for inclusion at 40 CFR Part 136.3 allowing its use for compliance reporting of ammonia nitrogen. End users are environmental laboratories.


    EPA 350.1, ammonium, nutrient

    The title and scope are in draft form and are under development within this ASTM Committee.

    Citing ASTM Standards
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    Work Item Status

    Date Initiated:

    Technical Contact:
    William Lipps

    Draft Under Development