ASTM_D_6667_-_21.pdf

Designation:D666721Standard Test Method forDetermination of Total Volatile Sulfur in GaseousHydrocarbons and Liquefied Petroleum Gases by UltravioletFluorescence1This standard is issued under the fixed designation D6667;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.Scope*1.1 This test method covers the determination of totalvolatile sulfur in gaseous hydrocarbons and liquefied petro-leum(LP)gases.It is applicable to analysis of natural,processed,and final product materials.Precision has beendetermined for sulfur in gaseous hydrocarbons in the range of1 mg kg to 100 mgkg and for sulfur in LP gases in the rangeof 1 mgkg to 196 mg kg(Note 1).NOTE1An estimate of pooled limit of quantification(PLOQ),information regarding sample stability and other general informationderived from the interlaboratory studies on precision can be referenced inthe ASTM research reports.2,31.2 This test method may not detect sulfur compounds thatdo not vaporize under the conditions of the test.1.3 This test method is applicable for total volatile sulfurdetermination in LP gases containing less than 0.35%(mass/mass)halogen(s).1.4 The values stated in SI units are to be regarded asstandard.No other units of measurement are included in thisstandard.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.See 3.1 and Sections 6 and 7 for specific warning statements.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:4D1070 Test Methods for Relative Density of Gaseous FuelsD1265 Practice for Sampling Liquefied Petroleum(LP)Gases,Manual MethodD2163 Test Method for Determination of Hydrocarbons inLiquefied Petroleum(LP)Gases and Propane/PropeneMixtures by Gas ChromatographyD2421 Practice for Interconversion of Analysis of C5andLighter Hydrocarbons to Gas-Volume,Liquid-Volume,orMass BasisD2598 Practice for Calculation of Certain Physical Proper-ties of Liquefied Petroleum(LP)Gases from Composi-tional AnalysisD3700 Practice for Obtaining LPG Samples Using a Float-ing Piston CylinderD5287 Practice for Automatic Sampling of Gaseous FuelsD6299 Practice for Applying Statistical Quality Assuranceand Control Charting Techniques to Evaluate AnalyticalMeasurement System PerformanceF307 Practice for Sampling Pressurized Gas for Gas Analy-sis2.2 Gas Processor Association(GPA)Standards:5GPA 2166 Obtaining Natural Gas Samples for Analysis byGas ChromatographyGPA 2174 Obtaining Liquid Hydrocarbon Samples forAnalysis by Gas Chromatography3.Summary of Test Method3.1 Aheated sample valve is used to inject gaseous samples.Liquefied petroleum gas(LPG)samples are injected by a1This test method is under the jurisdiction of ASTM Committee D02 onPetroleum Products,Liquid Fuels,and Lubricants and is the direct responsibility ofSubcommittee D02.03 on Elemental Analysis.Current edition approved April 1,2021.Published May 2021.Originallyapproved in 2001.Last previous edition approved in 2019 as D6667 14(2019).DOI:10.1520/D6667-21.2Supporting data have been filed at ASTM International Headquarters and maybe obtained by requesting Research Report RR:D02-1506.ContactASTM CustomerService at serviceastm.org.3Supporting data have been filed at ASTM International Headquarters and maybe obtained by requesting Research Report RR:D02-1784.ContactASTM CustomerService at serviceastm.org.4For 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.5Available from Gas Processors Association(GPA),6526 E.60th St.,Tulsa,OK74145.*A Summary of Changes section appears at the end of this standardCopyright 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.1sample valve connected to a heated expansion chamber.Thegaseous sample then enters a high temperature combustiontube where sulfur