ASTM C1000-05
Standard Test Method for Radiochemical Determination of Uranium Isotopes in Soil by Alpha Spectrometry

Standard No.

ASTM C1000-05

Release Date

2005

Published By

American Society for Testing and Materials (ASTM)

Status

Be replaced

Replace By

ASTM C1000-11

Latest

ASTM C1000-19

Scope

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.

1.1 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 efficiency, background, and tracer yield. The chemical recovery averaged 78 % in a single laboratory evaluation, and 66 % in an interlaboratory collaborative study.

1.4 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.

ASTM C1000-05 Referenced Document

• ASTM C1163 Standard Test Method for Mounting Actinides for Alpha Spectrometry Using Neodymium Fluoride
• ASTM C1284 Standard Practice for Electrodeposition of the Actinides for Alpha Spectrometry
• ASTM C998 Standard Practice for Sampling Surface Soil for Radionuclides
• ASTM C999 Standard Practice for Soil Sample Preparation for the Determination of Radionuclides
• ASTM D1193 Standard Specification for Reagent Water
• ASTM D3084 Standard Practice for Alpha-Particle Spectrometry of Water
• ASTM D3648 Standard Practices for the Measurement of Radioactivity

ASTM C1000-05 history

• 2019 ASTM C1000-19 Standard Test Method for Radiochemical Determination of Uranium Isotopes in Soil by Alpha Spectrometry
• 2011 ASTM C1000-11 Standard Test Method for Radiochemical Determination of Uranium Isotopes in Soil by Alpha Spectrometry
• 2005 ASTM C1000-05 Standard Test Method for Radiochemical Determination of Uranium Isotopes in Soil by Alpha Spectrometry
• 2000 ASTM C1000-00 Standard Test Method for Radiochemical Determination of Uranium Isotopes in Soil by Alpha Spectrometry