ASTM D8071-17
(Test Method)Standard Test Method for Determination of Hydrocarbon Group Types and Select Hydrocarbon and Oxygenate Compounds in Automotive Spark-Ignition Engine Fuel Using Gas Chromatography with Vacuum Ultraviolet Absorption Spectroscopy Detection (GC-VUV)
Standard Test Method for Determination of Hydrocarbon Group Types and Select Hydrocarbon and Oxygenate Compounds in Automotive Spark-Ignition Engine Fuel Using Gas Chromatography with Vacuum Ultraviolet Absorption Spectroscopy Detection (GC-VUV)
SIGNIFICANCE AND USE
5.1 The determination of class group composition of automotive spark-ignition fuels as well as quantification of various individual species such as oxygenates and aromatics in automotive fuels is useful for evaluating quality and expected performance, as well as compliance with various governmental regulations.
SCOPE
1.1 This test method is a standard procedure for the determination of paraffins, isoparaffins, olefins, naphthenes, aromatics, ethanol, and methanol in automotive spark-ignition engine fuels using gas chromatography and vacuum ultraviolet detection (GC-VUV).
1.2 Concentrations of compound classes and certain individual compounds are determined by percent mass or percent volume.
1.2.1 The method is developed for testing automotive spark-ignition engine fuels having concentrations of approximately 6 % to 17 % by mass paraffins, 24 % to 70 % by mass isoparaffins, 0.1 % to 16 % by mass olefins, 1 % to 14 % by mass naphthenes, and 16 % to 58 % by mass aromatics. Pending confirmation by a full interlaboratory study, the method is projected to be applicable to a wider range of concentrations and matrices. Temporary repeatability has been determined on a limited subset of samples given in 17.1.
1.3 Individual aromatic components and groups of aromatics greater than 0.01 % by mass are determined.
1.3.1 The method is developed for testing automotive spark-ignition engine fuels having concentrations of 0.08 % to 2.2 % by mass benzene, 1.7 % to 15 % by mass toluene, 0.3 % to 3 % by mass ethylbenzene, 1.5 % to 17 % by mass total xylenes, 0.06 % to 0.6 % by mass naphthalene, and 0.06 % to 1.1 % by mass total methylnaphthalenes. Pending confirmation by a full interlaboratory study, the method is projected to be applicable to a wider range of concentrations and matrices. Temporary repeatability has been determined on a limited subset of samples given in Table 8.
1.4 Isooctane (2,2,4-trimethylpentane) content is determined in the range 0.1 % by mass to 22 % by mass.
1.5 Ethanol and methanol may be determined by this test method. Ethanol is determined in the range of 0.1 % by mass to 15.0 % by mass. Methanol is determined in the range of 0.1 % by mass to 1.0 % by mass. Temporary repeatability has been determined on a limited subset of samples containing ethanol given in 17.1. Repeatability for methanol is currently not available.
1.6 Individual hydrocarbon components are typically not baseline-separated by the procedure described in this test method, that is, some components will coelute. The coelutions are resolved at the detector using VUV absorbance spectra and deconvolution algorithms.
1.7 While this test method reports percent mass and percent volume for several specific components that may be present in automotive spark-ignition engine fuel, it does not attempt to speciate all possible components that may occur in automotive spark-ignition engine fuel. In particular, this test method is not intended as a type of detailed hydrocarbon analysis (DHA).
1.8 This test method has been tested for spark-ignition engine fuels; the method may apply to spark-ignition blending streams but has not been extensively tested for such applications.
1.9 Units—The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard.
1.10 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use.
General Information
Buy Standard
Standards Content (Sample)
NOTICE: This standard has either been superseded and replaced by a new version or withdrawn.
Contact ASTM International (www.astm.org) for the latest information
Designation: D8071 − 17
Standard Test Method for
Determination of Hydrocarbon Group Types and Select
Hydrocarbon and Oxygenate Compounds in Automotive
Spark-Ignition Engine Fuel Using Gas Chromatography with
Vacuum Ultraviolet Absorption Spectroscopy Detection (GC-
1
VUV)
This standard is issued under the fixed designation D8071; the number immediately following the designation indicates the year of
original adoption or, in the case of revision, the year of last revision. A number in parentheses indicates the year of last reapproval. A
superscript epsilon (´) indicates an editorial change since the last revision or reapproval.
1. Scope repeatability has been determined on a limited subset of
samples given in Table 8.
1.1 This test method is a standard procedure for the deter-
mination of paraffins, isoparaffins, olefins, naphthenes,
1.4 Isooctane (2,2,4-trimethylpentane) content is deter-
aromatics, ethanol, and methanol in automotive spark-ignition
mined in the range 0.1 % by mass to 22 % by mass.
engine fuels using gas chromatography and vacuum ultraviolet
1.5 Ethanol and methanol may be determined by this test
detection (GC-VUV).
method. Ethanol is determined in the range of 0.1 % by mass
1.2 Concentrations of compound classes and certain indi-
to 15.0 % by mass. Methanol is determined in the range of
vidual compounds are determined by percent mass or percent
0.1 % by mass to 1.0 % by mass. Temporary repeatability has
volume.
been determined on a limited subset of samples containing
1.2.1 Themethodisdevelopedfortestingautomotivespark-
ethanol given in 17.1. Repeatability for methanol is currently
ignition engine fuels having concentrations of approximately
not available.
6 % to 17 % by mass paraffins, 24 % to 70 % by mass
1.6 Individual hydrocarbon components are typically not
isoparaffins, 0.1 % to 16 % by mass olefins, 1 % to 14 % by
baseline-separated by the procedure described in this test
mass naphthenes, and 16 % to 58 % by mass aromatics.
method, that is, some components will coelute. The coelutions
Pending confirmation by a full interlaboratory study, the
are resolved at the detector using VUV absorbance spectra and
method is projected to be applicable to a wider range of
deconvolution algorithms.
concentrations and matrices. Temporary repeatability has been
determined on a limited subset of samples given in 17.1.
1.7 While this test method reports percent mass and percent
1.3 Individual aromatic components and groups of aromat- volume for several specific components that may be present in
ics greater than 0.01 % by mass are determined. automotive spark-ignition engine fuel, it does not attempt to
1.3.1 Themethodisdevelopedfortestingautomotivespark- speciate all possible components that may occur in automotive
ignition engine fuels having concentrations of 0.08 % to 2.2 % spark-ignition engine fuel. In particular, this test method is not
bymassbenzene,1.7 %to15 %bymasstoluene,0.3 %to3 % intended as a type of detailed hydrocarbon analysis (DHA).
by mass ethylbenzene, 1.5 % to 17 % by mass total xylenes,
1.8 This test method has been tested for spark-ignition
0.06 % to 0.6 % by mass naphthalene, and 0.06 % to 1.1 % by
engine fuels; the method may apply to spark-ignition blending
mass total methylnaphthalenes. Pending confirmation by a full
streams but has not been extensively tested for such applica-
interlaboratory study, the method is projected to be applicable
tions.
to a wider range of concentrations and matrices. Temporary
1.9 Units—The values stated in SI units are to be regarded
as standard. No other units of measurement are included in this
1
This test method is under the jurisdiction of ASTM Committee D02 on
standard.
Petroleum Products, Liquid Fuels, and Lubricants and is the direct responsibility of
Subcommittee D02.04.0L on Gas Chromatography Methods.
1.10 This standard does not purport to address all of the
Current edition approved March 1, 2017. Published March 2017. DOI: 10.1520/
D8071-17. safety concerns, if any, associated with its use. It is the
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
1
---------------------- Page: 1 ----------------------
D8071 − 17
responsibility of the user of this standard to establish appro- effluent is introduced onto a GC column for separation, and
priate safety and health practices and determine the applica- then detected by a vacuum ultraviolet absorption spectroscopy
3
bility of regulatory limitations prior to use. detector. The separation is accomplished using a 30 m, non-
polarphasecapillarycolumnandamoderatelyfasttemperature
2. Referenced Documents
ramp (typical operating parameters of this test method are
2
2.1 ASTM Standards: given in Section 14). Coelutions are resolved by the detector
using vacuum ultraviolet absor
...
Questions, Comments and Discussion
Ask us and Technical Secretary will try to provide an answer. You can facilitate discussion about the standard in here.