ASTM C1517-2016 Standard Test Method for Determination of Metallic Impurities in Uranium Metal or Compounds by DC-Arc Emission Spectroscopy《采用直流电弧发射光谱法测定铀金属或化合物中金属杂质的 标准试验方法》.pdf
《ASTM C1517-2016 Standard Test Method for Determination of Metallic Impurities in Uranium Metal or Compounds by DC-Arc Emission Spectroscopy《采用直流电弧发射光谱法测定铀金属或化合物中金属杂质的 标准试验方法》.pdf》由会员分享,可在线阅读,更多相关《ASTM C1517-2016 Standard Test Method for Determination of Metallic Impurities in Uranium Metal or Compounds by DC-Arc Emission Spectroscopy《采用直流电弧发射光谱法测定铀金属或化合物中金属杂质的 标准试验方法》.pdf(6页珍藏版)》请在麦多课文档分享上搜索。
1、Designation: C1517 09C1517 16Standard Test Method forDetermination of Metallic Impurities in Uranium Metal orCompounds by DC-Arc Emission Spectroscopy1This standard is issued under the fixed designation C1517; the number immediately following the designation indicates the year oforiginal adoption or
2、, in the case of revision, the year of last revision. A number in parentheses indicates the year of last reapproval. Asuperscript epsilon () indicates an editorial change since the last revision or reapproval.1. Scope1.1 This test method describes the steps necessary for the preparation and determin
3、ation of impurity metals in uranium metaland uranium compounds by DC arc emission spectroscopy.1.2 The method is valid for those materials that can be dissolved in acid and/oror converted to an oxide in a muffle furnacefurnace, or both (see Practice C1347).1.3 This method uses the carrier distillati
4、on technique to selectively carry the impurities into the arc, leaving the uranium oxidein the electrode. If it is necessary to determine the carrier metal(usually metal (usually a silver or strontium, or gallium compound)as an impurity, another technique must be chosen for that element.1.4 UnitsThe
5、 values stated in SI units are to be regarded as standard. The values given in parentheses are for information only.1.5 This standard may involve hazardous materials, operations and equipment. This standard does not purport to address allof the safety concerns, if any, associated with its use. It is
6、 the responsibility of the user of this standard to establish appropriatesafety and health practices and determine the applicability of regulatory limitations prior to use.2. Referenced Documents2.1 ASTM Standards:2C753 Specification for Nuclear-Grade, Sinterable Uranium Dioxide PowderC761 Test Meth
7、ods for Chemical, Mass Spectrometric, Spectrochemical, Nuclear, and Radiochemical Analysis of UraniumHexafluorideC776 Specification for Sintered Uranium Dioxide PelletsC788 Specification for Nuclear-Grade Uranyl Nitrate Solution or CrystalsC859 Terminology Relating to Nuclear MaterialsC967 Specifica
8、tion for Uranium Ore ConcentrateC1347 Practice for Preparation and Dissolution of Uranium Materials for AnalysisE130 Practice for Designation of Shapes and Sizes of Graphite Electrodes (Withdrawn 2013)3E135 Terminology Relating to Analytical Chemistry for Metals, Ores, and Related Materials3. Termin
9、ology3.1 See definitions and terms Except as otherwise defined herein, definitions of terms are as given in Terminologies C859 andE135.4. Summary of Test Method4.1 Uranium metal, solutions and compounds are converted to uranium oxide (U3O8) in a muffle furnace. A weighed amountof the oxide is mixed
10、with an appropriate spectrographic carrier and loaded into a graphite electrode. The electrode is excited ina DC arc and the light is dispersed by a spectrograph or spectrometer. The resulting spectrum is measured electronically using a1 This test method is under the jurisdiction of ASTM Committee C
11、26 on Nuclear Fuel Cycle and is the direct responsibility of Subcommittee C26.05 on Methods of Test.Current edition approved June 1, 2009April 1, 2016. Published July 2009May 2016. Originally approved in 2002. Last previous edition approved in 20022009 asC1517 02.C1517 09. DOI: 10.1520/C1517-09.10.1
12、520/C1517-16.2 For referencedASTM standards, visit theASTM website, www.astm.org, or contactASTM Customer Service at serviceastm.org. For Annual Book of ASTM Standardsvolume information, refer to the standards Document Summary page on the ASTM website.3 The last approved version of this historical s
13、tandard is referenced on www.astm.org.This document is not an ASTM standard and is intended only to provide the user of an ASTM standard an indication of what changes have been made to the previous version. Becauseit may not be technically possible to adequately depict all changes accurately, ASTM r
14、ecommends that users consult prior editions as appropriate. In all cases only the current versionof the standard as published by ASTM is to be considered the official document.Copyright ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States1CCD, CID,
15、or CMOS camera or photographed on photographic plates or film sensitive to the proper regions. The line intensitiesare compared directly to standard plates or to calibration curves derived from the arced standards.5. Significance and Use5.1 This test method is applicable to uranium metal, uranium ox
16、ides and compounds soluble in nitric or sulfuric acid, anduranium solutions which can be converted to uranium oxide (U3O8) in a muffle furnace. It may be used to determine the impuritiesin uranium compounds as listed in Specifications C753, C776, C788, and C967.6. Apparatus6.1 Spectrograph or Spectr
17、ometerA spectrograph with sufficient resolving power and linear dispersion to separate theanalytical lines from other lines in the spectrum of the sample in the spectral region of 230.0230 to 855.0855 nm is required. Somespectrographs may be able to access wavelengths lower than 230 nm that may allo
18、w the determination of other analytes.Instruments with a reciprocal linear dispersion in the first order of 0.5 nm/mm or less are satisfactory.Adirect-reading spectrometerof comparable quality may be substituted for equipment listed, in which case the directions given by the manufacturer should besu
19、bstituted for those in this procedure.The spectrometer should include a CCD, CID, or CMOS camera for electronic measurementof the resulting spectrum.6.2 Excitation SourceUse an arc power source capable of providing a dc arc of up to 14-A dc, depending on the carrier usedand electrode design.6.3 Exci
20、tation StandConventional type with adjustable water-cooled electrode holders (may be fitted with automatic samplechangers if desired).6.4 Photographic Processing EquipmentUse developing, fixing, washing and drying equipment.6.5 Microphotometer, having a precision of at least 6 1 % for transmittances
21、.6.4 Mixer, for dry materials.6.5 Platinum Crucible.6.6 Venting Tool, (see Fig. 8, Test Methods C761). 01).6.7 Muffle Furnace, 1000C capability.7. Reagents and Materials7.1 Purity of MaterialsReagent grade chemicals shall be used in all tests. Unless otherwise indicated, it is intended that allreage
22、nts conform to the specifications of the Committee of Analytical Reagents of the American Chemical Society4 where suchspecifications are available. Other grades may be used provided it is first ascertained that the reagent is of sufficiently high purityto permit its use without lessening the accurac
23、y of the determination.7.2 ElectrodesThe anode and counter electrodes should be of the S-2, S 16 and C-1 types as given in Practice E130 (orequivalent).NOTE 1Exact shapes and dimensions of the electrodes are not as critical as given in Practice E130; however, dimensions of the electrodes used should
24、be consistent and it is essential that the same dimension electrodes be used for standards and samples.7.3 Photographic Processing SolutionsPrepare solutions as noted in available literature (1,2).7.4 Photographic Film/PlatesUse photo emulsion SA-1 and 1-N or equivalent.7.5 Powder Paper.7.3 Nitric A
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