ASTM_D_6228_-_19.pdf

Designation:D622819Standard Test Method forDetermination of Sulfur Compounds in Natural Gas andGaseous Fuels by Gas Chromatography and FlamePhotometric Detection1This standard is issued under the fixed designation D6228;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 determination of individualvolatile sulfur-containing compounds in gaseous fuels by gaschromatography(GC)with a flame photometric detector(FPD)or a pulsed flame photometric detector(PFPD).The detectionrange for sulfur compounds is from 20 to 20 000 picograms(pg)of sulfur.This is equivalent to 0.02 to 20 mg/m3or 0.014to 14 ppmv of sulfur based upon the analysis of a 1 mLsample.1.2 This test method describes a GC method using capillarycolumn chromatography with either an FPD or PFPD.1.3 This test method does not intend to identify all indi-vidual sulfur species.Total sulfur content of samples can beestimated from the total of the individual compounds deter-mined.Unknown compounds are calculated as monosulfur-containing compounds.1.4 The values stated in SI units are to be regarded asstandard.The values given in parentheses after SI units areprovided for information only and are not considered standard.1.5 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.1.6 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:2D1265 Practice for Sampling Liquefied Petroleum(LP)Gases,Manual MethodD1945 Test Method for Analysis of Natural Gas by GasChromatographyD3609 Practice for Calibration Techniques Using Perme-ation TubesD4468 Test Method for Total Sulfur in Gaseous Fuels byHydrogenolysis and Rateometric ColorimetryD4626 Practice for Calculation of Gas ChromatographicResponse FactorsD5287 Practice for Automatic Sampling of Gaseous FuelsD5504 Test Method for Determination of Sulfur Compoundsin Natural Gas and Gaseous Fuels by Gas Chromatogra-phy and ChemiluminescenceE840 Practice for Using Flame Photometric Detectors in GasChromatography2.2 EPA Standards:3EPA15 Determination of Hydrogen Sulfide,Carbonyl Sul-fide and Carbon Disulfide Emissions from StationarySources,40 CFR,Chapter 1,Part 60,Appendix AEPA16 Semicontinuous Determination of Sulfur Emissionsfrom Stationary Sources,40 CFR,Chapter 1,Part 60,Appendix A3.Terminology3.1 Abbreviations:3.1.1 A common abbreviation of a hydrocarbon compoundis to designate the number of carbon atoms in the compound.1This test method is under the jurisdiction ofASTM Committee D03 on GaseousFuels and is the direct responsibility of Subcommittee D03.05 on Determination ofSpecial Constituents of Gaseous Fuels.Current edition approved April 1,2019.Published May 2019.Originallyapproved in 1998.Last previous edition approved in 2010 as D6228 10 which waswithdrawn January 2019 and reinstated in April 2019.DOI:10.1520/D6228-19.2For 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 United States Environmental ProtectionAgency(EPA),WilliamJefferson Clinton Bldg.,1200 Pennsylvania Ave.,NW,Washington,DC 20460,http:/www.epa.gov.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 A prefix is used to indicate the carbon chain form,while asubscript suffix denotes the number of carbon atoms,forexample,normal decane=n-C10,isotetradecane=i-C14.3.1.2 Sulfur compounds commonly are referred to by theirinitials,chemical or formula,for example,methyl mercaptan=MeSH,dimethyl sulfide=DMS,carbonyl sulfide=COS,di-t-butyl trisulfide=DtB-TS,and tetrahydothiophene=THTor thiophane.4.Summary of Test Method4.1 Sample CollectionSulfur analysis ideally is performedon-site to eliminate potential sample deterioration duringstorage.The reactive nature of sulfur components may poseproblems both