Tiêu chuẩn quốc tế
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Số hiệu
Standard Number
ASTM C1022-17
Năm ban hành 2017
Publication date
Tình trạng
A - Còn hiệu lực
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Tên tiếng Anh
Title in English Standard Test Methods for Chemical and Atomic Absorption Analysis of Uranium-Ore Concentrate
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Chỉ số phân loại Quốc tế (ICS)
By field |
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Số trang
Page 16
Giá:
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Phạm vi áp dụng
Scope of standard 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. 1.2 The analytical procedures appear in the following order: Sections Uranium by Ferrous Sulfate Reduction-Potassium Dichromate Titrimetry 9 Nitric Acid-Insoluble Uranium 10 to 18 Extractable Organic Material 19 to 26 Determination of Arsenic 27 Carbonate by CO2 Gravimetry 28 to 34 Fluoride by Ion-Selective Electrode 35 to 42 Halides by Volhard Titration 43 to 50 Phosphorus by Spectrophotometry 52 to 60 Determination of Silicon 61 Determination of Thorium 62 Calcium, Iron, Magnesium, Molybdenum, Titanium, and Vana- dium by Atomic Absorption Spectrophotometry 63 to 72 Potassium and Sodium by Atomic Absorption Spectrophotometry 73 to 82 Boron by Spectrophotometry 83 to 92 1.3 The values stated in SI units are to be regarded as standard. The values given in parentheses are for information only. 1.4 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, health, and environmental practices and determine the applicability of regulatory limitations prior to use. A specific precautionary statement is given in Section 7. 1.5 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.
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