1、Designation:D 5480 95(Reapproved 1999)e1An American National StandardStandard Test Method forEngine Oil Volatility by Gas Chromatography1This standard is issued under the fixed designation D 5480;the number immediately following the designation indicates the year oforiginal adoption or,in the case o
2、f revision,the year of last revision.A number in parentheses indicates the year of last reapproval.Asuperscript epsilon(e)indicates an editorial change since the last revision or reapproval.e1NOTEWarning statements were made part of the text in November 1999.1.Scope1.1 This test method provides for
3、the determination of theamount of engine oil volatilized at 371C(700F).This testmethod is applicable to engine oils containing high molecularweight components that need not elute from a gas chromato-graphic column.1.1.1 This test method can also be used to determine theamount of oil volatilized at a
4、ny temperature between 238 and371C,if so desired.1.2 This test method is limited to samples having an initialboiling point(IBP)greater than 238C(460F).1.3 The values stated in SI units are to be regarded asstandard.The values stated in inch-pound units are providedfor information only.1.4 This stand
5、ard 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 and health practices and determine the applica-bility of regulatory limitations prior to use.For specificprecautionary statem
6、ents,see 6.2,6.3,and 6.42.Referenced Documents2.1 ASTM Standards:D 2887 Test Method for Boiling Range Distribution ofPetroleum Fractions by Gas Chromatography2D 4626 Practice for Calculation of Gas ChromatographicResponse Factors22.2DIN Standard:DIN 51.581 Noack Evaporative Test33.Summary of Test Me
7、thod3.1 The sample is mixed with an internal standard and adilute tetracosane solution,and injected into a gas chromato-graph.The column temperature is raised at a reproducible rateand the area under the chromatogram is recorded throughoutthe run.The retention time(RT)at 371C(700F)is calculatedusing
8、 linear regression,utilizing the n-paraffins comprising theinternal standard and the tetracosane retention time/boilingpoint data.The area response(area/g)of the internal standardis related to the area of the sample determined to the 371C RTto obtain the mass percentage of oil volatilized at 371C.4.
9、Significance and Use4.1 The determination of engine oil volatility at 371C(700F)is a requirement in some lubricant specifications.4.2 This test method is intended to give a more precisemeasurement of oil volatility than that obtainable using theNoack method.44.3 This test method can be used on lubri
10、cant products notwithin the scope of Test Method D 2887.5.Apparatus5.1 Chromatograph,any gas chromatograph can be usedthat has the following characteristics:5.1.1 Oven,a column oven having high-temperature(400C/752F)capability is required.5.1.2 Detector,a flame ionization detector capable of con-tin
11、uous operation at temperatures of 405C(761F)is required.5.1.3 Column Temperature ProgrammerThe chromato-graph must be capable of reproducible linear temperatureprogramming over the temperature range required for the testmethod.5.1.4 Sample Inlet SystemThe sample inlet system mustprovide for on-colum
12、n injection or equivalent such as program-mable splitless injection.5.1.5 Column,12 m by 0.53 mm by 0.15 m nonpolar,carborane modified polydimethylsiloxane bonded phase col-umn or equivalent that can withstand the high column oventemperature employed,and meets the resolution requirementsstipulated i
13、n 7.3 must be used.5.1.6 IntegratorMeans must be provided for determiningthe accumulated area under the chromatogram.This can bedone by means of a computer or electronic integrator.A timing1This test method is under the jurisdiction of ASTM Committee D-2 onPetroleum Products and Lubricants and is th
14、e direct responsibility of SubcommitteeD02.04.0H on Gas Chromatographic Methods.Current edition approved Aug.15,1995.Published October 1995.Originallypublished as D 5480 93.Last previous edition D 5480 93.2Annual Book of ASTM Standards,Vol 05.02.3DIN 51.581,Prufung von Schmierstoffen:Bestimmung des
15、Verdampfungsver-lustes von Schmierolen nach Noack Testing of Lubricants:Determination of NoackVolatility of Lubricating Oils(1958).4The samples used in the ASTM cooperative study for this test methodconducted by ASTM Subcommittee D02.04 were also used for a round-robin studyof a proposed Standard Te
16、st Method for Evaporation Loss of Lubricating Oils by theNoack Method conducted in 1992 by ASTM Subcommittee D02.06.Refer to theminutes of the December 1992 Subcommittee D02.06 meeting for information onthe differences between the methods.1Copyright ASTM,100 Barr Harbor Drive,West Conshohocken,PA 19428-2959,United States.device can be used to record the area at set time intervals.Thesame basis for measuring time must be used to determine theretention times of the internal standard components and
