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ASTM C1475

Standard Guide for Determination of Neptunium-237 in Soil

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Organization: ASTM
Publication Date: 10 June 2000
Status: inactive
Page Count: 4
ICS Code (Chemical characteristics of soils): 13.080.10
scope:

1. Scope

1.1 This guide covers the determination of neptunium-237 in soil by means of radiochemical separations and alpha spectrometry. This guide provides options in the selection of sample preparation, separation, and measurement. Although neptunium-237 is not a component of global fallout, it is a product of production reactors and spent fuel processing. This guide is designed for analysis of ten grams of soil previously collected and treated in accordance with Practices C 998 and C 999. Larger-size samples of environmental soil may also be analyzed, as long as the concentrations of interferences such as uranium and thorium are at or near environmental concentrations. Depending on the choice of a sample dissolution method, all chemical forms of neptunium may not be completely solubilized. This guide should allow the determination of neptunium-237 concentrations from sub becquerel per gram levels to applicable standards depending on count time, sample size, detector efficiency, background, and tracer yield.

1.2 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 limitations prior to use. Specific precautionary statements are given in Section 8.

Document History

June 1, 2017
Standard Guide for Determination of Neptunium-237 in Soil
This guide covers the determination of neptunium-237 in soil by means of radiochemical separations and alpha spectrometry. This guide provides options in the selection of sample preparation,...
June 1, 2005
Standard Guide for Determination of Neptunium-237 in Soil
This guide covers the determination of neptunium-237 in soil by means of radiochemical separations and alpha spectrometry. This guide provides options in the selection of sample preparation,...
June 1, 2005
Standard Guide for Determination of Neptunium-237 in Soil
This guide covers the determination of neptunium-237 in soil by means of radiochemical separations and alpha spectrometry. This guide provides options in the selection of sample preparation,...
ASTM C1475
June 10, 2000
Standard Guide for Determination of Neptunium-237 in Soil
1. Scope 1.1 This guide covers the determination of neptunium-237 in soil by means of radiochemical separations and alpha spectrometry. This guide provides options in the selection of sample...

References

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