1、Designation:D513421Standard Test Method forDetailed Analysis of Petroleum Naphthas through n-Nonaneby Capillary Gas Chromatography1This standard is issued under the fixed designation D5134;the number immediately following the designation indicates the year oforiginal adoption or,in the case of revis
2、ion,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.INTRODUCTIONDespite the many advances in capillary gas chromatography instrumentation and the remarkableresolution ach
3、ievable,it has proven difficult to standardize a test method for the analysis of a mixtureas complex as petroleum naphtha.Because of the proliferation of numerous,similar columns and theendless choices of phase thickness,column internal diameter,length,etc.,as well as instrumentoperating parameters,
4、many laboratories use similar but not identical methods for the capillary GCanalysis of petroleum naphthas.Even minute differences in column polarity or column oventemperature,for example,can change resolution or elution order of components and make theiridentification an individual interpretive pro
5、cess rather than the desirable,objective application ofstandard retention data.To avoid this,stringent column specifications and temperature and flowconditions have been adopted in this test method to ensure consistent elution order and resolution andreproducible retention times.Strict adherence to
6、the specified conditions is essential to the successfulapplication of this test method.1.Scope*1.1 This detailed hydrocarbon analysis(DHA)test methodcovers the determination of hydrocarbon components paraffins,naphthenes,and monoaromatics(PNA)of petroleum naphthasas enumerated in Table 1.Components
7、eluting after n-nonane(bp 150.8 C)are determined as a single group.1.2 This test method is applicable to olefin-free(C7.1.5 Detailed hydrocarbon components in olefin containingsamples may be determined by DHA Test Methods D6729,D6730,or D6733.1.6 The values stated in SI units are to be regarded asst
8、andard.No other units of measurement are included in thisstandard.1.7 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-
9、mine the applicability of regulatory limitations prior to use.Specific warning statements are given in Section 8.1.8 This international standard was developed in accor-dance with internationally recognized principles on standard-ization established in the Decision on Principles for theDevelopment of
10、 International Standards,Guides and Recom-mendations issued by the World Trade Organization TechnicalBarriers to Trade(TBT)Committee.2.Referenced Documents2.1 ASTM Standards:2D1319 Test Method for Hydrocarbon Types in Liquid Petro-leum Products by Fluorescent Indicator Adsorption1This test method is
11、 under the jurisdiction of ASTM Committee D02 onPetroleum Products,Liquid Fuels,and Lubricants and is the direct responsibility ofSubcommittee D02.04.0L on Gas Chromatography Methods.Current edition approved Dec.1,2021.Published December 2021.Originallyapproved in 1990.Last previous edition approved
12、 in 2017 as D5134 13(2017).DOI:10.1520/D5134-21.2For 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.*A Summary of Chan
13、ges 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
14、 on Principles for theDevelopment of International Standards,Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade(TBT)Committee.1?TABLE 1 Typical Retention Characteristics of Naphtha ComponentsNOTE1The abbreviations N and P refer to unidentified naphthenes an
15、d paraffins respectively.CompoundRetention Time,minAdjusted RetentionTime,minKovats RetentionIndex 35 CLinear Retention IndexMethane3.570.00100.0.Ethane3.650.08200.0.Propane3.840.27300.0.Isobutane4.140.57367.3.n-Butane4.390.82400.0.2,2-Dimethylpropane4.530.96415.5.Isopentane5.331.76475.0.n-Pentane5.
16、842.27500.0.2,2-Dimethylbutane6.813.24536.2.Cyclopentane7.834.26564.1.2,3-Dimethylbutane7.894.32565.5.2-Methylpentane8.064.49569.5.3-Methylpentane8.725.15583.4.n-Hexane9.636.06600.0.2,2-Dimethylpentane11.227.65624.2.Methylcyclopentane11.397.82626.5.2,4-Dimethylpentane11.688.11630.3.2,2,3-Trimethylbutane12.098.52635.4.Benzene13.299.72649.1.3,3-dimethylpentane13.8410.27654.8.Cyclohexane14.1910.62658.3.2-Methylhexane15.2011.63667.8.2,3-Dimethylpentane15.3511.78669.1.1,1-Dimethylcyclopentane15.6112.
