1、Designation:D622810Standard 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 a
2、doption 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-conta
3、ining 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 upo
4、n 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 c
5、ompounds 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 stated in inch-pound units are for infor-mation only.1.5 This standard does not purport to address all the safetyconcerns,if any,associa
6、ted with its use.It is the responsibilityof the user of this standard to establish appropriate safety andhealth practices and determine the applicability of regulatorylimitations prior to use.2.Referenced Documents2.1 ASTM Standards:2D1265 Practice for Sampling Liquefied Petroleum(LP)Gases,Manual Me
7、thodD1945 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 Factors
8、D5287 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:EPA15 Determination of H
9、ydrogen 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
10、hydrocarbon compoundis to designate the number of carbon atoms in the compound.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 theirini
11、tials,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 deteriorati
12、on duringstorage.The reactive nature of sulfur components may poseproblems both in sampling and analysis.Samples should becollected and stored in containers that are nonreactive to sulfur1This test method is under the jurisdiction ofASTM Committee D03 on GaseousFuels and is the direct responsibility
13、 of Subcommittee D03.05 on Determination ofSpecial Constituents of Gaseous Fuels.Current edition approved Dec.1,2010.Published January 2011.Originallyapproved in 1998.Last previous edition approved in 2003 as D6228 98(2003).DOI:10.1520/D6228-10.2For referenced ASTM standards,visit the ASTM website,w
14、ww.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.Copyright ASTM International,100 Barr Harbor Drive,PO Box C700,West Conshohocken,PA 19428-2959.United States1 compounds,s
15、uch as Tedlar3bags.Sample containers should befilled and purged at least three times to ensure representativesampling.Laboratory equipment also must be inert,wellconditioned,and passivated with a gas containing the sulfurcompounds of interest to ensure reliable results.Frequentcalibration and daily
16、verification of calibration curve usingstable standards are required.Samples should be analyzedwithin 24 h of collection to minimize sample deterioration.Ifthe stability of analyzed sulfur components is provedexperimentally,the time between collection and analysis maybe lengthened.See Practices D1265 and D5287.4.2 Sample IntroductionA 1-mL aliquot of the sample isinjected into a gas chromatograph where it is passed through acapillary column capable of separating sulfur components.4.3 Flame Photo