Область применения

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 C 967.

1.2 The analytical procedures appear in the following order:

SectionsUranium by Ferrous Sulfate Reduction-Potassium Dichromate Titrimetry9Nitric Acid-Insoluble Uranium10 to 18Extractable Organic Material19 to 26Arsenic by Diethyldithiocarbamate (Photometric Method)27 to 36Carbonate by CO₂ Gravimetry37 to 43Fluoride by Ion-Selective Electrode44 to 51Halides by Volhard Titration52 to 59Moisture by Loss of Weight at 110°C60 to 66Phosphorus by Spectrophotometry67 to 75Silicon by Gravimetry76 to 82Thorium by the Thorin (Photometric) Method83 to 91Calcium, Iron, Magnesium, Molybdenum, Titanium, and Vana-dium by Atomic Absorption Spectrophotometry92 to 101Potassium and Sodium by Atomic Absorption Spectrophotometry102 to 111Boron by Spectrophotometry112 to 121

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. Specific precautionary statements are given in Sections 7, 32, and Note 14.