ASTM C1000 - 11

    Standard Test Method for Radiochemical Determination of Uranium Isotopes in Soil by Alpha Spectrometry

    Active Standard ASTM C1000 | Developed by Subcommittee: C26.05

    Book of Standards Volume: 12.01


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    Significance and Use

    This test method is used to analyze soil for alpha-emitting uranium isotopes. It can be used to establish baseline uranium levels and to monitor depositions from nuclear facilities.

    1. Scope

    1.1 This test method covers the determination of alpha-emitting uranium isotopes in soil. This test method describes one acceptable approach to the determination of uranium isotopes in soil.

    1.2 The test method is designed to analyze 10 g of soil; however, the sample size may be varied to 50 g depending on the activity level. This test method may not be able to completely dissolve all forms of uranium in the soil matrix. Studies have indicated that the use of hydrofluoric acid to dissolve soil has resulted in lower values than results using total dissolution by fusion.

    1.3 The lower limit of detection is dependent on count time, sample size, detector, background, and tracer yield. The chemical yield averaged 78 % in a single laboratory evaluation, and 66 % in an interlaboratory collaborative study.

    1.4 The values stated in SI units are to be regarded as standard. The values given in parentheses are for information only.

    1.5 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use. A specific precautionary statement is given in Section 10.


    2. Referenced Documents (purchase separately) The documents listed below are referenced within the subject standard but are not provided as part of the standard.

    ASTM Standards

    C859 Terminology Relating to Nuclear Materials

    C998 Practice for Sampling Surface Soil for Radionuclides

    C999 Practice for Soil Sample Preparation for the Determination of Radionuclides

    C1163 Practice for Mounting Actinides for Alpha Spectrometry Using Neodymium Fluoride

    C1284 Practice for Electrodeposition of the Actinides for Alpha Spectrometry

    D1193 Specification for Reagent Water

    D3084 Practice for Alpha-Particle Spectrometry of Water

    D3648 Practices for the Measurement of Radioactivity

    D7282 Practice for Set-up, Calibration, and Quality Control of Instruments Used for Radioactivity Measurements


    ICS Code

    ICS Number Code 17.240 (Radiation measurements)

    UNSPSC Code

    UNSPSC Code 11111501(Soil); 12142203(Alpha sources)


    Referencing This Standard

    DOI: 10.1520/C1000-11

    ASTM International is a member of CrossRef.

    Citation Format

    ASTM C1000-11, Standard Test Method for Radiochemical Determination of Uranium Isotopes in Soil by Alpha Spectrometry, ASTM International, West Conshohocken, PA, 2011, www.astm.org

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