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ASTM-C1255:2011 Edition

ASTM-C1255:2011 Edition

$40.63

C1255-11 Standard Test Method for Analysis of Uranium and Thorium in Soils by Energy Dispersive X-Ray Fluorescence Spectroscopy

Published By Publication Date Number of Pages
ASTM 2011 7
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1.1 This test method covers the energy dispersive X-ray fluorescence (EDXRF) spectrochemical analysis of trace levels of uranium and thorium in soils. Any sample matrix that differs from the general ground soil composition used for calibration (that is, fertilizer or a sample of mostly rock) would have to be calibrated separately to determine the effect of the different matrix composition.

1.2 The analysis is performed after an initial drying and grinding of the sample, and the results are reported on a dry basis. The sample preparation technique used incorporates into the sample any rocks and organic material present in the soil. This test method of sample preparation differs from other techniques that involve tumbling and sieving the sample.

1.3 Linear calibration is performed over a concentration range from 20 to 1000 ? g per gram for uranium and thorium.

1.4 The values stated in SI units are to be regarded as the standard. The inch-pound units 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.

PDF Catalog

PDF Pages PDF Title
1 Scope
Referenced Documents
Terminology
2 Summary of Test Method
Significance and Use
Interferences
Apparatus
3 Reagents and Materials
Hazards
Sampling, Test Specimens, and Test Units
Sample Preparation
4 Preparation of Apparatus
Calibration and Standardization
TABLE 1
6 Procedure
Calculation
Precision and Bias
TABLE 2
7 Keywords
REFERENCES
TABLE 3

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