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GB/T 14501.6-2008: Methods for analysis of uranium hexafluoride -- Part 6: Determination of uranium
Status: Valid GB/T 14501.6: Evolution and historical versions
| Standard ID | Contents [version] | USD | STEP2 | [PDF] delivered in | Standard Title (Description) | Status | PDF |
| GB/T 14501.6-2008 | English | 279 |
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Methods for analysis of uranium hexafluoride -- Part 6: Determination of uranium
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GB/T 14501.6-2008
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| GB/T 14501.6-1994 | English | 359 |
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Determination of uranium in uranium hexafluoride
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GB/T 14501.6-1994
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PDF similar to GB/T 14501.6-2008
Standard similar to GB/T 14501.6-2008 GB/T 10266 GB/T 11842 GB/T 13697 GB/T 13375 Basic data | Standard ID | GB/T 14501.6-2008 (GB/T14501.6-2008) | | Description (Translated English) | Methods for analysis of uranium hexafluoride -- Part 6: Determination of uranium | | Sector / Industry | National Standard (Recommended) | | Classification of Chinese Standard | F46 | | Classification of International Standard | 27.120.30 | | Word Count Estimation | 12,151 | | Date of Issue | 2008-09-19 | | Date of Implementation | 2009-08-01 | | Older Standard (superseded by this standard) | GB/T 14501.6-1994 | | Regulation (derived from) | Announcement of Newly Approved National Standards No. 16 of 2008 (No. 129 overall) | | Issuing agency(ies) | General Administration of Quality Supervision, Inspection and Quarantine of the People's Republic of China, Standardization Administration of the People's Republic of China | | Summary | This standard specifies the uranium in uranium hexafluoride gravimetric and potentiometric titration mainly two methods of operating conditions and steps. This section applies to uranium hexafluoride Determination of uranium, but also for high-purity uranium compounds precise determination of uranium. | GB/T 14501.6-2008: Methods for analysis of uranium hexafluoride -- Part 6: Determination of uranium---This is a DRAFT version for illustration, not a final translation. Full copy of true-PDF in English version (including equations, symbols, images, flow-chart, tables, and figures etc.) will be manually/carefully translated upon your order.
Methods for analysis of uranium hexafluoride Part 6. Determination of uranium
ICS 27.120.30
F46
National Standards of People's Republic of China
Replacing GB/T 14501.6-1994
Uranium hexafluoride Analysis
Part 6. Determination of uranium
Posted 2008-09-19
2009-08-01 implementation
Administration of Quality Supervision, Inspection and Quarantine of People's Republic of China
Standardization Administration of China released
Foreword
GB/T 14501 "uranium hexafluoride analysis method" is expected to be divided into six sections.
--- Part 1. Chemical Spectrometry;
--- Part 2. Determination of phosphorus;
--- Part 3. Determination of tungsten, molybdenum, niobium, titanium, zirconium chemical spectroscopy;
--- Part 4. Determination of silicon;
--- Part 5. Determination of titanium;
--- Part 6. Determination of uranium.
This section GB/T 14501 Part 6.
This Part replaces GB/T 14501.6-1994 "Determination of uranium hexafluoride of uranium."
Section compared with the GB/T 14501.6-1994 The main changes are as follows.
--- Technical content by weight, based on the same method, modify some of the statements;
--- Revised technical content potentiometric titration;
--- Remove the appendix "non-volatile impurities mass conversion factor";
--- Added Appendix "Air buoyancy correction" and "uranium hexafluoride sample preparation method."
This section of the Appendix A, Appendix B and Appendix C are normative appendix.
This part is proposed by the China National Nuclear Corporation.
This part of the National Standardization Technical Committee centralized nuclear energy.
This section is drafted. nuclear enrichment Ltd. Shaanxi.
The main drafters of this section. Lijun Liang, S. & Leung Kwong Fu, Li Kaiming, Li.
This part replaces the standards previously issued as follows.
--- GB/T 14501.6-1994.
Uranium hexafluoride Analysis
Part 6. Determination of uranium
1 Scope
This section provides the main operating conditions and procedures uranium hexafluoride uranium gravimetric and potentiometric titration of the two methods.
This section applies to the determination of uranium hexafluoride of uranium, but also for high-purity uranium compounds precise determination of uranium.
2 gravimetric method
2.1 Method summary
UF6 samples (8-12) liquefied decimation achieved g, frozen in liquid nitrogen after hydrolysis, evaporated hydrolyzate (uranyl fluoride solution), then
After high temperature hydrolysis into Triuranium, composed of eight three uranium oxide to obtain quality and potentiometric titration of the quality factor, calculated six
UF uranium content.
2.2 Reagents and Instruments
Unless otherwise indicated in the analysis using only recognized as analytical grade reagents and distilled or deionized water.
2.2.1 deionized water.
2.2.2 nitric acid solution, 1 + 1.
2.2.3 hydrolysis temperature furnace, muffle furnace 3kW, lining 2mm thick nickel sheet (200mm × 115mm × 75mm), and with the steam generator and
Connected to the condenser.
2.2.4 with cover platinum platinum boat, 100mL.
2.2.5 platinum Baotou pliers.
2.2.6 PTFE rod.
2.2.7 tweezers, length 200mm, fluorine plastic header.
2.2.8 Infrared lamp, 275W.
2.2.9 Analytical Balance, indexing is 0.1mg.
2.2.10 wrench, 250mm × 30mm.
2.2.11 oven.
2.2.12 bench vise, 75mm.
2.3 Procedure
2.3.1 platinum boat ready
2.3.1.1 platinum boat (2.2.4) into the nitric acid solution (2.2.2) boiled 10min, then washed with deionized water (2.2.1) rinse.
2.3.1.2 platinum boat into the high temperature hydrolysis furnace (2.2.3), and burned at 900 ℃ for 20min.
2.3.1.3 ignited after 40min weighed platinum boat cooling in a dryer, accurate to 0.1mg.
2.3.1.4 5min after weighing, weighing results if two adjacent difference is less than 0.2mg, record results of the second. Otherwise repeat weighing,
Until two adjacent weighing result is less than 0.2mg. Platinum boat made of quality m1.
2.3.2 hydrolysis sample, evaporated to dryness and burning
2.3.2.1 checking samples of uranium hexafluoride, if the sample is yellow, it indicates that the sample moisture, can not be used.
2.3.2.2 The sample tube containing a sample of uranium hexafluoride, into the fume hood standing with a gauze wipe the surface moisture and fixtures, home and dry
The balance is more than 3h.
2.3.2.3 Weigh the sample containing uranium hexafluoride sample tube, accurate to 0.1mg, once every 30min said, until two adjacent weighing result
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