1.1This practice is an alternative method to ASTM C 1411 08 for the ion exchange separation in small volume samples (~ 1mL) of uranium and plutonium from each other and from other impurities for subsequent isotopic analysis by thermal ionization mass spectrometry (TIMS). In addition to being adapted to smaller sample sizes, this practice also avoids the use of HCl and HF and does not require the use of two anion exchange columns. For TIMS analysis of plutonium and uranium isotopic abundance, plutonium238 and uranium238, and plutonium241 and americium241, will appear as the same mass peak and must be chemically separated prior to analysis. Only high purity solutions can be analyzed reliably using thermal ionization mass spectrometry. Concentrations and volumes given in the paragraphs below can be modified for larger sample volumes, different types of anion exchange resin, etc. 1.2 This standard may involve hazardous material, operations, and equipment. 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 consult and establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use.
This proposed standard offers an alternative to the ASTM C1411 standard. The proposed standard uses smaller volumes, only one resin column, and HCl and HF are not required.
Keywordsnuclear fuel cycle, analytical chemistry,
The title and scope are in draft form and are under development within this ASTM Committee.Back to Top
Draft Under Development