ASTM D 3649 : 2006
Superseded
A superseded Standard is one, which is fully replaced by another Standard, which is a new edition of the same Standard.
View Superseded by
Standard Practice for High-Resolution Gamma-Ray Spectrometry of Water
Hardcopy , PDF
04-08-2023
English
15-12-2006
CONTAINED IN VOL. 11.02, 2017 Outlines the measurement of gamma-ray emitting radionuclides in water by means of gamma-ray spectrometry.
Committee |
D 19
|
DocumentType |
Test Method
|
Pages |
8
|
ProductNote |
Reconfirmed 2006
|
PublisherName |
American Society for Testing and Materials
|
Status |
Superseded
|
SupersededBy | |
Supersedes |
1.1 This practice covers the measurement of gamma-ray emitting radionuclides in water by means of gamma-ray spectrometry. It is applicable to nuclides emitting gamma-rays with energies greater than 45 keV. For typical counting systems and sample types, activity levels of about 40 Bq are easily measured and sensitivities as low as 0.4 Bq are found for many nuclides. Count rates in excess of 2000 counts per second should be avoided because of electronic limitations. High count rate samples can be accommodated by dilution, by increasing the sample to detector distance, or by using digital signal processors.
1.2 This practice can be used for either quantitative or relative determinations. In relative counting work, the results may be expressed by comparison with an initial concentration of a given nuclide which is taken as 100 %. For quantitative measurements, the results may be expressed in terms of known nuclidic standards for the radionuclides known to be present. This practice can also be used just for the identification of gamma-ray emitting radionuclides in a sample without quantifying them. General information on radioactivity and the measurement of radiation has been published
This standard does not purport to address 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 limitation prior to use.
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ASTM C 1638 : 2006 : R2013 | Standard Guide for the Determination of Iodine-129 In Uranium Oxide (Withdrawn 2021) |
ASTM D 4785 : 2008 : R2013 : EDT 1 | Standard Test Method for Low-Level Analysis of Iodine Radioisotopes in Water |
ASTM D 7784 : 2012 | Standard Practice for the Rapid Assessment of Gamma-ray Emitting Radionuclides in Environmental Media by Gamma Spectrometry |
ASTM D 3454 : 2018 | Standard Test Method for Radium-226 in Water |
ASTM D 3648 : 2014 | Standard Practices for the Measurement of Radioactivity (Withdrawn 2023) |
ASTM D 1129 : 2013 : REDLINE | Standard Terminology Relating to Water |
ASTM D 2777 : 2013 : REDLINE | Standard Practice for Determination of Precision and Bias of Applicable Test Methods of Committee D19 on Water |
ASTM E 181 : 2017 : REDLINE | Standard Test Methods for Detector Calibration and Analysis of Radionuclides |
ASTM D 3648 : 2014 : REDLINE | Standard Practices for the Measurement of Radioactivity (Withdrawn 2023) |
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