ASTM_D_7652_-_11.pdf

Designation:D765211Standard Test Method forDetermination of Trace Hydrogen Sulfide,Carbonyl Sulfide,Methyl Mercaptan,Carbon Disulfide and Total Sulfur inHydrogen Fuel by Gas Chromatography and SulfurChemiluminescence Detection1This standard is issued under the fixed designation D7652;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 describes a procedure primarily for thedetermination of hydrogen sulfide,carbonyl sulfide,methylmercaptan,and carbon disulfide(Table 1)in hydrogen fuels forfuel cell vehicles(FCV)by gas chromatograph with sulfurchemiluminescence detection.The reporting limit is 0.02 ppbv(nanomole per mole as volume),based upon the analysis of a500 mL hydrogen sample.The procedures described in thismethod were designed to satisfy sulfur contaminant determi-nation requirements contained in SAE TIRJ2719 and theCalifornia Code of Regulations,CFR,Title 4,Division 9,Chapter 6,Article 8,Sections 4180 4181.1.2 This test method can be extended to other sulfur speciesin hydrogen fuel that are eluted through a chromatographiccolumn.1.3 This test method can be modified to analyze all sulfurcompounds present without chromatographic separation;thus,providing a total sulfur estimation without speciation(Appen-dix X1).1.4If any new sulfur compounds need to be analyzed inhydrogen fuel,the calibration or spiking sulfur standards mustinclude these new compounds after their method detectionlimit study.In addition,no co-elution is allowed in thechromatographic analysis of the calibration standard contain-ing both the newly added and the existing sulfur targetcompounds.If necessary,the chromatographic conditions maybe modified to achieve this goal.1.5 Although,primarily intended for determining sulfur inhydrogen used as a fuel for fuel cell or internal combustionengine powered vehicles,this test method can also be used tomeasure sulfur compounds in other gaseous fuels and gaseousmatrices provided data quality objectives are satisfied.1.6 The values stated in SI units are standard.The valuesstated in inch-pound units are for information only.1.7 Mention of trade names in this standard does notconstitute endorsement or recommendation for use.Othermanufacturers of equipment or equipment models can be used.1.8 Alternative DetectorsThis test method is written pri-marily for the use of sulfur chemiluminescent detectors butother detectors can be used provided they can detect hydrogensulfide,carbonyl sulfide,methyl mercaptan,and carbon disul-fide at 0.02 ppbv in hydrogen and meet data quality objectivesfor the intended use.1.9 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.For safety issuesrelated to liquid nitrogen,refer to material safety data sheet(MSDS)from liquid nitrogen supplier.2.Referenced Documents2.1 ASTM Standards:2D5504 Test Method for Determination of Sulfur Compoundsin Natural Gas and Gaseous Fuels by Gas Chromatogra-phy and ChemiluminescenceD7606 Practice for Sampling of High Pressure Hydrogenand Related Fuel Cell Feed Gases2.2 SAE Standards:3SAE TIR J2719 Information Report of the Development of aHydrogen Quality Guideline for Fuel Cell Vehicles2.3 California Code of Regulations:4California Code of Regulations Title 4,Division 89,Chapter6,Article 8,Sections 41804181.1This test method is under the jurisdiction ofASTM Committee D03 on GaseousFuels and is the direct responsibility of Subcommittee D03.14 on Hydrogen andFuel Cells.Current edition approved March 1,2011.Published March 2011.DOI 10.1520/D765211.2For 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 SAE International(SAE),400 Commonwealth Dr.,Warrendale,PA 15096-0001,http:/www.sae.org.4Available from the Office ofAdministrative Law,300 Capitol Mall,Suite 1250,Sacramento,CA 958144339.Copyright ASTM International,100 Barr Harbor Drive,PO Box C700,West Conshohocken,PA 19428-2959.United States1 2.4US Code of Federal Regulations:5CFR Title 40,Appendix B,PART 136(Guideline Establish-ing Test Procedures for the Analysis of Pollutants)3.Terminology3.1 Definitions:3.1.1 absolute pressurepressure measured with referenceto absolute zero pressure,usually expressed as kPa,mm Hg,bar or psia.3.1.2 constituentcomponent(or compound)found withina hydrogen fuel mixture.3.1.3 contaminantimpurity that adversely affects the com-ponents within the fuel cell system or the hydrogen storagesy