Significance and Use

The test methods in this standard are designed to show whether a given material meets the specifications prescribed in Specification C967 .

Because of the variability of matrices of uranium-ore concentrate and the lack of suitable reference or calibration materials, the precision and bias of these test methods should be established by each individual laboratory that will use them. The precision and bias statements given for each test method are those reported by various laboratories and can be used as a guideline.

Instrumental test methods such as X-ray fluorescence and emission spectroscopy can be used for the determination of some impurities where such equipment is available.

1. Scope

1.1 These test methods cover procedures for the chemical and atomic absorption analysis of uranium-ore concentrates to determine compliance with the requirements prescribed in Specification C967 .

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

C761 Test Methods for Chemical, Mass Spectrometric, Spectrochemical, Nuclear, and Radiochemical Analysis of Uranium Hexafluoride

C859 Terminology Relating to Nuclear Materials

C967 Specification for Uranium Ore Concentrate

C1110 Practice for Sample Preparation for X-Ray Emission Spectrometric Analysis of Uranium in Ores Using the Glass Fusion or Pressed Powder Method

C1219 Test Methods for Arsenic in Uranium Hexafluoride

C1254 Test Method for Determination of Uranium in Mineral Acids by X-Ray Fluorescence

C1267 Test Method for Uranium by Iron (II) Reduction in Phosphoric Acid Followed by Chromium (VI) Titration in the Presence of Vanadium

C1287 Test Method for Determination of Impurities in Nuclear Grade Uranium Compounds by Inductively Coupled Plasma Mass Spectrometry

C1347 Practice for Preparation and Dissolution of Uranium Materials for Analysis

D1193 Specification for Reagent Water

E60 Practice for Analysis of Metals, Ores, and Related Materials by Spectrophotometry

Keywords

concentrates; uranium ore; Sodium--nuclear applications; Spectrophotometry--atomic absorption; Spectroscopy--emission; Spectroscopy--X-ray fluorescence (XRF); Sulfur--nuclear materials; Thorium content; Titanium content; Uranium content; Uranium ore; Vanadium content; Volhard titration; XRF (X-ray fluorescence)--nuclear materials; Arsenic content--nuclear materials/applications; Boron content--nuclear-grade materials; Calcium content; Carbon content--nuclear materials; Diethyldithiocarbamate (photometric) method; Carbon dioxide gravimetry; Extractable matter content; Ferrous sulfate reduction; Fluoride content; Halide (ion) content; Ion selective electrode method; Iron content; Magnesium content--nuclear materials; Molybdenum content--uranium oxide; Nitric acid-insoluble uranium; Phosphorus content; Potassium content; Potassium dichromate titrimetry; Silicon content ;

ICS Code

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

DOI: 10.1520/C1022-05R10E01

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ASTM C1022