1、Designation:D550420Standard Test Method forDetermination of Sulfur Compounds in Natural Gas andGaseous Fuels by Gas Chromatography andChemiluminescence1This standard is issued under the fixed designation D5504;the number immediately following the designation indicates the year oforiginal adoption or
2、,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 is primarily for the determination ofspeciated volatile sulfur-contai
3、ning compounds in high meth-ane content gaseous fuels such as natural gas.It has beensuccessfully applied to other types of gaseous samples,includ-ing air,digester,landfill,and refinery fuel gas.The detectionrange for sulfur compounds,reported as picograms sulfur,is0.01 to 1000.This is equivalent to
4、 0.01 to 1000 mg/m3,basedupon the analysis of a 1 cc sample.1.2 The range of this test method may be extended to higherconcentration by dilution or by selection of a smaller sampleloop.NOTE1 Dilution will reduce method precision.1.3 This test method does not purport to identify all sulfurspecies in
5、a sample.Only compounds that are eluted throughthe selected column under the chromatographic conditionschosen are determined.The detector response to sulfur isequimolar for all sulfur compounds within the scope(1.1)ofthis test method.Thus,unidentified compounds are determinedwith equal precision to
6、that of identified substances.Totalsulfur content is determined from the total of individuallyquantified components.1.4 UnitsThe values stated in SI units are to be regardedas standard.The values given in parentheses after SI units areprovided for information only and are not considered standard.1.5
7、 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 Thi
8、s 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(T
9、BT)Committee.2.Referenced Documents2.1 ASTM Standards:2D1072 Test Method for Total Sulfur in Fuel Gases byCombustion and Barium Chloride TitrationD1945 Test Method for Analysis of Natural Gas by GasChromatographyD3609 Practice for Calibration Techniques Using Perme-ation TubesD4010 Specification for
10、 Waterless Hand Cleaner(With-drawn 2000)3D4150 Terminology Relating to Gaseous FuelsD4468 Test Method for Total Sulfur in Gaseous Fuels byHydrogenolysis and Rateometric ColorimetryD4884 Test Method for Strength of Sewn or Bonded Seamsof GeotextilesE177 Practice for Use of the Terms Precision and Bia
11、s inASTM Test MethodsE594 Practice for Testing Flame Ionization Detectors Usedin Gas or Supercritical Fluid ChromatographyE691 Practice for Conducting an Interlaboratory Study toDetermine the Precision of a Test Method3.Terminology3.1 For definitions of general terms used in D03 GaseousFuels standar
12、ds,refer to Terminology D4150.4.Summary of Test Method4.1 The analysis of gaseous sulfur compounds is challeng-ing due to the reactivity of these substances.They are difficultto sample and analyze.Ideally,analysis is performed on-site toeliminate sample deterioration as a factor in analysis.Sampling
13、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 Nov.1,2020.Published December 2020.Originallyapproved in 1994.Last previous editi
14、on approved in 2012 as D5504 12.DOI:10.1520/D5504-20.2For 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.3The last app
15、roved version of this historical standard is referenced onwww.astm.org.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 est
16、ablished 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.must be performed using non-reactive containers,such asSilcosteel4lined vessels,Tedlar5bags with polypropylenefittings,or the equivalent.Tedlar5bag samples require protec-tion from light and heat.Laboratory equipment must be inert orpassivated to ensure reliable results.4.2 A one cc(mL)sample is injected i
