ASTM_D_8214_-_18.pdf

Designation:D821418Standard Test Method forForms of Sulfur in Coal by Inductively CoupledPlasma Atomic Emission Spectrometry1This standard is issued under the fixed designation D8214;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 applies to the determination of sulfatesulfur and pyritic sulfur in coal and calculates organic sulfur bydifference.This test method is not applicable to coke or othercarbonaceous materials.1.2 The values stated in SI units are to be regarded asstandard.Non-SI units,if provided,are considered informa-tional and are contained within parentheses1.3 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,health,and environmental practices and deter-mine the applicability of regulatory limitations prior to use.1.4 This international standard was developed in accor-dance with internationally recognized principles on standard-ization established in the Decision on Principles for theDevelopment of International Standards,Guides and Recom-mendations issued by the World Trade Organization TechnicalBarriers to Trade(TBT)Committee.2.Referenced Documents2.1 ASTM Standards:2D121 Terminology of Coal and CokeD1193 Specification for Reagent WaterD2013 Practice for Preparing Coal Samples for AnalysisD3173 Test Method for Moisture in the Analysis Sample ofCoal and CokeD3180 Practice for Calculating Coal and Coke Analysesfrom As-Determined to Different BasesD4239 Test Method for Sulfur in the Analysis Sample ofCoal and Coke Using High-Temperature Tube FurnaceCombustionD7582 Test Methods for Proximate Analysis of Coal andCoke by Macro Thermogravimetric AnalysisE691 Practice for Conducting an Interlaboratory Study toDetermine the Precision of a Test MethodE832 Specification for Laboratory Filter Papers2.2 ISO Standards:3ISO 5725-6 Accuracy(Trueness and Precision)of Measure-ment Methods and Results Part 6:Use in Practice ofAccuracy Values3.Terminology3.1 For definitions of terms used in this test method,refer toTerminology D121.4.Summary of Test Method4.1 Sulfate Sulfur:4.1.1 Sulfate sulfur is extracted from the analysis samplewith a dilute hydrochloric acid solution.The sulfate sulfur inthe extract is determined by inductively coupled plasma atomicemission spectrometry(ICP-AES).Sulfates are soluble inhydrochloric acid,pyritic sulfur and organic sulfur are notsoluble in hydrochloric acid.4.2 Pyritic Sulfur:4.2.1 Pyritic sulfur is extracted from the pretreated samplewith a dilute nitric acid solution.The pyritic sulfur in theextract is determined by correlating extracted iron content,measured by ICP-AES,as pyritic sulfur content.4.2.2 Monosulfides(pyrites and FeS2are disulfides)of ironand elements such as cadmium,lead,vanadium,and zinc canbe present in coal.In mass fractions up to 100 g g,thesemonosulfides do not contribute significantly to the total inor-ganic sulfide content.4-61This test method is under the jurisdiction of ASTM Committee D05 on Coaland Coke and is the direct responsibility of Subcommittee D05.21 on Methods ofAnalysis.Current edition approved Nov.1,2018.Published January 2019.DOI:10.1520/D8214-18.2For 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.3Available from International Organization for Standardization(ISO),ISOCentral Secretariat,BIBC II,Chemin de Blandonnet 8,CP 401,1214 Vernier,Geneva,Switzerland,http:/www.iso.org.4Edwards,A.H.,Daybell,G.N.,and Pringle,W.J.S.,“An Investigation intoMethods for the Determination of Forms of Sulfur in Coal,”Fuel,Vol 37,1958,pp.47-59.5Burns,M.S.,“Determination of Pyritic Sulfur in Australian Coals,”Fuel,Vol49,1970,pp.126-133.6Shrimp,N.F.,Helfinstine,R.J.,and Kuhn,J.K.,“Determination of Forms ofSulfur in Coal,”Symposium on Sulfur and Nitrogen in Coal and Oil Shale,1975,pp.99-108.Copyright ASTM International,100 Barr Harbor Drive,PO Box C700,West Conshohocken,PA 19428-2959.United StatesThis international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for theDevelopment of International Standards,Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade(TBT)Committee.1 5.Significance and Use5.1 This test method provides for a separation of coal-associated sulfur into two commonly recognized forms:pyriticand sulfate.Organic sulfur is calculated by difference.Resultsobtained by the test method are used to serve a number ofinterests,including the evalu