ASTM_E_1277_-_14.pdf

Designation:E127714Standard Test Method forAnalysis of Zinc-5%Aluminum-Mischmetal Alloys by ICPEmission Spectrometry1This standard is issued under the fixed designation E1277;the number immediately following the designation indicates the year oforiginal adoption or,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 covers the chemical analysis of zincalloys having chemical compositions within the followinglimits:ElementComposition Range,%Aluminum3.08.0Antimony0.002 maxCadmium0.025 maxCerium0.030.10Copper0.10 maxIron0.10 maxLanthanum0.030.10Lead0.026 maxMagnesium0.05 maxSilicon0.015 maxTin0.002 maxTitanium0.02 maxZirconium0.02 max1.2 The values stated in SI units are to be regarded asstandard.No other units of measurement are included in thisstandard.1.3 Included are procedures for elements in the followingcomposition ranges:ElementComposition Range,%Aluminum3.08.0Cadmium0.00160.025Cerium0.0050.10Iron0.00150.10Lanthanum0.0090.10Lead0.0020.0261.4 This standard does not purport to address all of thesafety concerns,if any,associated with its use.It is theresponsibility of the user of this standard to establish appro-priate safety and health practices and determine the applica-bility of regulatory limitations prior to use.Specific safetyhazards statements are given in Section 8,11.2,and 13.1.2.Referenced Documents2.1 ASTM Standards:2D1193 Specification for Reagent WaterE29 Practice for Using Significant Digits in Test Data toDetermine Conformance with SpecificationsE50 Practices for Apparatus,Reagents,and Safety Consid-erations for Chemical Analysis of Metals,Ores,andRelated MaterialsE55 Practice for Sampling Wrought Nonferrous Metals andAlloys for Determination of Chemical CompositionE88 Practice for Sampling Nonferrous Metals and Alloys inCast Form for Determination of Chemical CompositionE135 Terminology Relating to Analytical Chemistry forMetals,Ores,and Related MaterialsE173 Practice for Conducting Interlaboratory Studies ofMethods for Chemical Analysis of Metals(Withdrawn1998)3E876 Practice for Use of Statistics in the Evaluation ofSpectrometric Data(Withdrawn 2003)3E1601 Practice for Conducting an Interlaboratory Study toEvaluate the Performance of an Analytical Method2.2 NIST Standard Reference Materials:4SRM 728 Zinc,Intermediate Purity3.Terminology3.1 For definitions of terms used in this test method,refer toTerminology E135.4.Summary of Test Method4.1 The sample is dissolved in mixed acids.The samplesolution is introduced into the plasma source of an ICPspectrometer and the intensities at selected wavelengths from1This test method is under the jurisdiction of ASTM Committee E01 onAnalytical Chemistry for Metals,Ores,and Related Materials and is the directresponsibility of Subcommittee E01.05 on Cu,Pb,Zn,Cd,Sn,Be,Precious Metals,their Alloys,and Related Metals.Current edition approved Nov.1,2014.Published January 2015.Originallyapproved in 1991.Last previous edition approved in 2008 as E1277 08.DOI:10.1520/E1277-14.2For referenced ASTM standards,visit the ASTM website,www.astm.org,orcontact ASTM Customer Service at serviceastm.org.For Annual Book of ASTMStandards volume information,refer to the standards Document Summary page onthe ASTM website.3The last approved version of this historical standard is referenced onwww.astm.org.4Available from National Institute of Standards and Technology(NIST),100Bureau Dr.,Stop 1070,Gaithersburg,MD 20899-1070,http:/www.nist.gov.Copyright ASTM International,100 Barr Harbor Drive,PO Box C700,West Conshohocken,PA 19428-2959.United States1 the plasma emission spectrum are compared to the intensities atthe same wavelengths measured with calibration solutions.5.Significance and Use5.1 This test method for the chemical analysis of metals andalloys is primarily intended to test such materials for compli-ance with compositional specifications.It is assumed that allthose who use this test method will be trained analysts capableof performing common laboratory procedures skillfully andsafely.It is expected that work will be performed in a properlyequipped laboratory.6.Apparatus6.1 Inductively-Coupled Argon Plasma(ICP)Atomic Emis-sion SpectrometerThe instrument may be either sequential orsimultaneous,axial or radial,and shall be capable of isolatingthe required wavelengths shown in Table 1 for measurement oftheir intensities.Multielement programmed analysis includingautomatic data acquisition and computer-controlled calibrationand determinations may be used if available,provided that,inaddition to calculated results,the instrument records intensityreadings each time a test sample or calibration solution ispresented to the instrument.7.Reagents7.1 Purity of ReagentsReagent grade chemicals shall beused in all tests.Unless otherwise indicated,it is intended thatall reagents conform to the specifications of