ASTM_D_7169_-_20e1.pdf

Designation:D7169201Standard Test Method forBoiling Point Distribution of Samples with Residues Suchas Crude Oils and Atmospheric and Vacuum Residues byHigh Temperature Gas Chromatography1This standard is issued under the fixed designation D7169;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.1NOTEEditorially corrected Table 2 in August 2020.1.Scope*1.1 This test method covers the determination of the boilingpoint distribution and cut point intervals of crude oils andresidues by using high temperature gas chromatography.Theamount of residue(or sample recovery)is determined using anexternal standard.1.2 This test method extends the applicability of simulateddistillation to samples that do not elute completely from thechromatographic system.This test method is used to determinethe boiling point distribution through a temperature of 720 C.This temperature corresponds to the elution of n-C100.1.3 This test method is used for the determination of boilingpoint distribution of crude oils.This test method uses capillarycolumns with thin films,which results in the incompleteseparation of C4-C8in the presence of large amounts of carbondisulfide,and thus yields an unreliable boiling point distribu-tion corresponding to this elution interval.In addition,quench-ing of the response of the detector employed to hydrocarbonseluting during carbon disulfide elution,results in unreliablequantitative analysis of the boiling distribution in the C4-C8region.Since the detector does not quantitatively measure thecarbon disulfide,its subtraction from the sample using asolvent-only injection and corrections to this region viaquenching factors,results in an approximate determination ofthe net chromatographic area.A separate,higher resolution gaschromatograph(GC)analysis of the light end portion of thesample may be necessary in order to obtain a more accuratedescription of the boiling point curve in the interval in questionas described in Test Method D7900(see Appendix X1).1.4 This test method is also designed to obtain the boilingpoint distribution of other incompletely eluting samples such asatmospheric residues,vacuum residues,etc.,that are charac-terized by the fact that the sample components are resolvedfrom the solvent.1.5 This test method is not applicable for the analysis ofmaterials containing a heterogeneous component such aspolyesters and polyolefins.1.6 The values stated in inch-pound units are to be regardedas standard.The values given in parentheses are mathematicalconversions to SI units that are provided for information onlyand are not considered standard.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-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 International Standards,Guides and Recom-mendations issued by the World Trade Organization TechnicalBarriers to Trade(TBT)Committee.2.Referenced Documents2.1 ASTM Standards:2D2887 Test Method for Boiling Range Distribution of Pe-troleum Fractions by Gas ChromatographyD2892 Test Method for Distillation of Crude Petroleum(15-Theoretical Plate Column)D4057 Practice for Manual Sampling of Petroleum andPetroleum ProductsD6352 Test Method for Boiling Range Distribution of Pe-troleum Distillates in Boiling Range from 174 C to700 C by Gas Chromatography1This test method is under the jurisdiction of ASTM Committee D02 onPetroleum Products,Liquid Fuels,and Lubricants and is the direct responsibility ofSubcommittee D02.04.0H on Chromatographic Distribution Methods.Current edition approved May 1,2020.Published June 2020.Originallyapproved in 2005.Last previous edition approved in 2019 as D7169 19.DOI:10.1520/D7169-20E01.2For 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 Changes 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 on Principles for theDevelopment of International Standards,Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade(TB