ASTM-C1477 › Standard Test Method for Isotopic Abundance Analysis of Uranium Hexafluoride and Uranyl Nitrate Solutions by Multi-Collector, Inductively Coupled Plasma-Mass Spectrometry
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1.1 This test method covers the isotopic abundance analysis of 234U, 235U, 236 U and 238U in samples of hydrolysed uranium hexafluoride (UF6) by inductively coupled plasma source, multicollector, mass spectrometry (ICP-MC-MS). The method applies to material with 235U abundance in the range of 0.2 to 6 % mass. This test method is also described in ASTM STP 1344.
1.2 The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard.
1.3 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.
Significance and Use
5.1 The test method is capable of measuring uranium isotopic abundances of 234U, 235U, 236U and 238U as required by Specifications C787 and C996.
ICP-MC-MS; ICP-MS; inductively coupled plasma mass spectrometer; internal reference; isotope ratio; isotopic abundance; mass bias; mass bias factor; mass bias parameter; memory; multi-collector; thorium; uranium; ICS Number Code 27.120.30 (Fissile materials and nuclear fuel technology)
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2008 R14 EDITION
Feb. 15, 2014