ASTM D6733-2001(2011) 7500 Standard Test Method for Determination of Individual Components in Spark Ignition Engine Fuels by 50-Metre Capillary High Resolution Gas Chromatography《用.pdf
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1、Designation: D6733 01 (Reapproved 2011)Standard Test Method forDetermination of Individual Components in Spark IgnitionEngine Fuels by 50-Metre Capillary High Resolution GasChromatography1This standard is issued under the fixed designation D6733; the number immediately following the designation indi
2、cates 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 individualhydrocarbon components of spark-ignition engine fuels withboiling ranges up to 225C. Other light liquid hydrocarbonmixtures typically encountered in petroleum refining opera-tions, such as, blending stocks (naphthas, reformates, alkylates,and so forth) may also be analyzed; however, sta
4、tistical datawas obtained only with blended spark-ignition engine fuels.The tables in Annex A1 enumerate the components reported.Component concentrations are determined in the range from0.10 to 15 mass %. The procedure may be applicable to higherand lower concentrations for the individual components
5、; how-ever, the user must verify the accuracy if the procedures areused for components with concentrations outside the specifiedranges.1.2 This test method is applicable also to spark-ignitionengine fuel blends containing oxygenated components. How-ever, in this case, the oxygenate content must be d
6、etermined byTest Methods D5599 or D4815.1.3 Benzene co-elutes with 1-methylcyclopentene. Benzenecontent must be determined by Test Method D3606 or D5580.1.4 Toluene co-elutes with 2,3,3-trimethylpentane. Toluenecontent must be determined by Test Method D3606 or D5580.1.5 Although a majority of the i
7、ndividual hydrocarbonspresent are determined, some co-elution of compounds isencountered. If this procedure is utilized to estimate bulkhydrocarbon group-type composition (PONA) the user of suchdata should be cautioned that error may be encountered due toco-elution and a lack of identification of al
8、l componentspresent. Samples containing significant amounts of naphthenic(for example, virgin naphthas) constituents above n-octanemay reflect significant errors in PONA type groupings. Basedon the interlaboratory cooperative study, this procedure isapplicable to samples having concentrations of ole
9、fins less than20 mass %. However, significant interfering coelution with theolefins above C7is possible, particularly if blending compo-nents or their higher boiling cuts such as those derived fromfluid catalytic cracking (FCC) are analyzed, and the total olefincontent may not be accurate. Many of t
10、he olefins in sparkignition fuels are at a concentration below 0.10 %; they are notreported by this test method and may bias the total olefinresults low.1.5.1 Total olefins in the samples may be obtained orconfirmed, or both, by Test Method D1319 (volume %) orother test methods, such as those based
11、on multidimensionalPONA type of instruments.1.6 If water is or is suspected of being present, its concen-tration may be determined, if desired, by the use of TestMethod D1744. Other compounds containing sulfur, nitrogen,and so forth, may also be present, and may co-elute with thehydrocarbons. If det
12、ermination of these specific compounds isrequired, it is recommended that test methods for these specificmaterials be used, such as Test Method D5623 for sulfurcompounds.1.7 The values stated in SI units are to be regarded as thestandard. The values given in parentheses are provided forinformation o
13、nly.1.8 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 and health practices and determine the applica-bility of regulatory limitations prior to use.2. Referenc
14、ed Documents2.1 ASTM Standards:2D1319 Test Method for Hydrocarbon Types in LiquidPetroleum Products by Fluorescent Indicator AdsorptionD1744 Test Method for Determination of Water in LiquidPetroleum Products by Karl Fischer Reagent3D3606 Test Method for Determination of Benzene and1This test method
15、is under the jurisdiction of ASTM Committee D02 onPetroleum Products and Lubricants and is the direct responsibility of SubcommitteeD02.04.0L on Gas Chromatography Methods.Current edition approved May 1, 2011. Published May 2011. Originallyapproved in 2001. Last previous edition approved in 2006 as
16、D6733 01 (2006).DOI: 10.1520/D6733-01R11.2For 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.3Withdrawn. The last
17、 approved version of this historical standard is referencedon www.astm.org.1Copyright ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.Toluene in Finished Motor and Aviation Gasoline by GasChromatographyD4057 Practice for Manual Sampling of Petr
18、oleum andPetroleum ProductsD4420 Test Method for Determination of Aromatics inFinished Gasoline by Gas Chromatography3D4815 Test Method for Determination of MTBE, ETBE,TAME, DIPE, tertiary-Amyl Alcohol and C1to C4Alco-hols in Gasoline by Gas ChromatographyD5580 Test Method for Determination of Benze
19、ne, Tolu-ene, Ethylbenzene, p/m-Xylene, o-Xylene, C9and HeavierAromatics, and Total Aromatics in Finished Gasoline byGas ChromatographyD5599 Test Method for Determination of Oxygenates inGasoline by Gas Chromatography and Oxygen SelectiveFlame Ionization DetectionD5623 Test Method for Sulfur Compoun
20、ds in Light Petro-leum Liquids by Gas Chromatography and Sulfur Selec-tive DetectionE355 Practice for Gas Chromatography Terms and Rela-tionships3. Terminology3.1 DefinitionsThis test method makes reference to manycommon gas chromatographic procedures, terms, and relation-ships. Detailed definitions
21、 can be found in Practice E355.4. Summary of Test Method4.1 Representative samples of the petroleum liquid areintroduced into a gas chromatograph equipped with an opentubular (capillary) column coated with specified stationaryphase(s). Helium carrier gas transports the vaporized samplethrough the co
22、lumn in which it is partitioned into individualcomponents, which are sensed with a flame ionization detectoras they elute from the end of the column. The detector signalis recorded digitally by way of an integrator or integratingcomputer. Each eluting component is identified by comparingits retentio
23、n time to those established by analyzing referencestandards or samples under identical conditions. The concen-tration of each component in mass % is determined by normal-ization of the peak areas after correction of selected compo-nents with detector response factors. The unknowncomponents are repor
24、ted individually as well as a summarytotal.5. Significance and Use5.1 Knowledge of the individual component composition(speciation) of gasoline fuels and blending stocks is useful forrefinery quality control and product specification. Processcontrol and product specification compliance for many indi
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