1. Scope

1.1 This test method covers the determination of 67 elements in uranium dioxide samples and nuclear grade uranium compounds and solutions without matrix separation by inductively coupled plasma mass spectrometry (ICP-MS). The elements are listed in Table 1. These elements can also be determined in uranyl nitrate hexahydrate (UNH), uranium hexafluoride (UF ₆ ), triuranium octoxide (U ₃ O ₈ ) and uranium trioxide (UO ₃ ) if these compounds are treated and converted to the same uranium concentration solution.

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 regulatory limitations prior to use. For a specific warning statement, see Note 1.

Note 1 Warning : The ICP-MS is a source of intense ultra-violet radiation from the radio frequency induced plasma. Protection from radio frequency radiation and UV radiation is provided by the instrument under normal operation.

1.3 The elements boron, sodium, silicon, phosphorus, potassium, calcium and iron can be determined using different techniques. The analyst's instrumentation will determine which procedure is chosen for the analysis.

1.4 The test method for technetium-99 is given in Annex A1.

2. Referenced Documents (purchase separately) The documents listed below are referenced within the subject standard but are not provided as part of the standard.

ASTM Standards

C753 Specification for Nuclear-Grade, Sinterable Uranium Dioxide Powder

C776 Specification for Sintered Uranium Dioxide Pellets

C787 Specification for Uranium Hexafluoride for Enrichment

C788 Specification for Nuclear-Grade Uranyl Nitrate Solution or Crystals

C967 Specification for Uranium Ore Concentrate

C996 Specification for Uranium Hexafluoride Enriched to Less Than 5 % 235U

C1346 Practice for Dissolution of UF6 from P-10 Tubes ,

C1347 Practice for Preparation and Dissolution of Uranium Materials for Analysis

D1193 Specification for Reagent Water

Keywords

impurities; inductively coupled plasma mass spectrometry; uranium; uranium dioxide; uranium hexafluoride; uranyl nitrate solutions; uranium oxide; uranium trioxide; ICP-MS (inductively-coupled plasma-mass spectrometry); Impurities--nuclear materials; Mass spectrometry--nuclear materials/applications; Uranium; Uranium oxide (U 3 O 8 );

ICS Code

ICS Number Code 27.120.30 (Fissile materials and nuclear fuel technology)

DOI: 10.1520/C1287-03

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