1、Designation:D544314(Reapproved 2018)Standard Test Method forParaffin,Naphthene,and Aromatic Hydrocarbon TypeAnalysis in Petroleum Distillates Through 200 C by Multi-Dimensional Gas Chromatography1This standard is issued under the fixed designation D5443;the number immediately following the designati
2、on 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 covers the determination
3、of paraffins,naphthenes,and aromatics by carbon number in low olefinichydrocarbon streams having final boiling points of 200 C orless.Hydrocarbons with boiling points greater than 200 C andless than 270 C are reported as a single group.Olefins,ifpresent,are hydrogenated and the resultant saturates a
4、reincluded in the paraffin and naphthene distribution.Aromaticsboiling at C9and above are reported as a single aromatic group.1.2 This test method is not intended to determine individualcomponents except for benzene and toluene that are the onlyC6and C7aromatics,respectively,and cyclopentane that is
5、 theonly C5naphthene.The lower limit of detection for a singlehydrocarbon component or group is 0.05%by mass.1.3 This test method is applicable to hydrocarbon mixturesincluding virgin,catalytically converted,thermally converted,alkylated and blended naphtha.1.4 The values stated in SI units are to b
6、e regarded asstandard.No other units of measurement are included in thisstandard.1.4.1 The abbreviation for SI unit“coulomb”is“C”.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 a
7、ppro-priate safety,health,and environmental practices and deter-mine the applicability of regulatory limitations prior to use.Specific precautionary statements are given in Section 7 andTable 1.2.Referenced Documents2.1 ASTM Standards:2D4057 Practice for Manual Sampling of Petroleum andPetroleum Pro
8、ductsD4307 Practice for Preparation of Liquid Blends for Use asAnalytical StandardsD5134 Test Method for Detailed Analysis of PetroleumNaphthas through n-Nonane by Capillary Gas Chroma-tographyD6839 Test Method for Hydrocarbon Types,OxygenatedCompounds,and Benzene in Spark Ignition Engine Fuelsby Ga
9、s Chromatography3.Summary of Test Method3.1 A representative sample is introduced into a gas chro-matographic system containing a series of columns and switch-ing valves.As the sample passes through a polar column,thepolar aromatic compounds,bi-naphthenes,and high boiling(200 C)paraffins and naphthe
10、nes are retained.The fractionnot retained elutes to a platinum column,that hydrogenatesolefins,if present,in this fraction,and then to a molecular sievecolumn which performs a carbon number separation based onmolecular structure,that is,naphthenes and paraffins.Thefraction remaining on the polar col
11、umn is further divided intothree separate fractions that are then separated on a non-polarcolumn by boiling point.Eluting compounds are detected by aflame ionization detector.3.2 The mass concentration of each group is determined bythe multiplication of detected peak areas by flame ionizationdetecto
12、r response factors and normalization to 100%.3.3 This test method provides limited identification ofindividual hydrocarbon components.Test Method D5134 may1This test method is under the jurisdiction of ASTM Committee D02 onPetroleum Products,Liquid Fuels,and Lubricants and is the direct responsibili
13、ty ofSubcommittee D02.04.0L on Gas Chromatography Methods.Current edition approved Oct.1,2018.Published November 2018.Originallyapproved in 1993.Last previous edition approved in 2014 as D5443 14.DOI:10.1520/D5443-14R18.2For referenced ASTM standards,visit the ASTM website,www.astm.org,orcontact AST
14、M 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 StatesThis international standard was develo
15、ped 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.1 be used to obtain spec
16、iation of a number of individualcompounds.For samples containing olefins,Test MethodD6839 provides carbon number distributions of hydrocarbontypes(PIONA).4.Significance and Use4.1 A knowledge of the composition of hydrocarbon refin-ery streams is useful for process control and quality assurance.4.2 Aromatics in gasoline are soon to be limited by federalmandate.This test method can be used to provide suchinformation.5.Interferences5.1 Chemicals of a non-hydrocarbon composition may elutewithin the
