ASTM WK68990

    Revision of D7284 - 13(2017) Standard Test Method for Total Cyanide in Water by Micro Distillation followed by Flow Injection Analysis with Gas Diffusion Separation and Amperometric Detection

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    Active Standard: D7284 - 13(2017)

    Developed by Subcommittee: D19.06 | Committee D19 | Contact Staff Manager



    WK68990


    Keywords

    amperometry; cyanide; distillation; flow injection analysis; gas diffusion membrane; total cyanide;;

    Rationale

    ASTM D7365-09a is referenced in 40 CFR Part 136.3, Table IIRequired Containers, Preservation Techniques, and Holding Times. In lines 23-24, this table states that samples for cyanide, total or available and free should be cool, 6 C, NaOH to pH 10, reducing agent if oxidizer present. Based on the requirements described in 40 CFR 136.3 and ASTM D7365, the standard will be revised to preserve samples to pH10. The task group will revise section 10.3 of ASTM D7284 be consistent with D7365 and 40 CFR 136.3 Table II.

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    Work Item Status

    Date Initiated:
    07-08-2019

    Technical Contact:
    John Sebroski

    Status:
    Draft Under Development