ASTM D6733-01(2016)
(Test Method)Standard Test Method for Determination of Individual Components in Spark Ignition Engine Fuels by 50-Metre Capillary High Resolution Gas Chromatography
Standard Test Method for Determination of Individual Components in Spark Ignition Engine Fuels by 50-Metre Capillary High Resolution Gas Chromatography
SIGNIFICANCE AND USE
5.1 Knowledge of the individual component composition (speciation) of gasoline fuels and blending stocks is useful for refinery quality control and product specification. Process control and product specification compliance for many individual hydrocarbons may be determined through the use of this test method.
SCOPE
1.1 This test method covers the determination of individual hydrocarbon components of spark-ignition engine fuels with boiling ranges up to 225 °C. Other light liquid hydrocarbon mixtures typically encountered in petroleum refining operations, such as, blending stocks (naphthas, reformates, alkylates, and so forth) may also be analyzed; however, statistical data was obtained only with blended spark-ignition engine fuels. The tables in Annex A1 enumerate the components reported. Component concentrations are determined in the range from 0.10 % to 15 % by mass. The procedure may be applicable to higher and lower concentrations for the individual components; however, the user must verify the accuracy if the procedures are used for components with concentrations outside the specified ranges.
1.2 This test method is applicable also to spark-ignition engine fuel blends containing oxygenated components. However, in this case, the oxygenate content must be determined by Test Methods D5599 or D4815.
1.3 Benzene co-elutes with 1-methylcyclopentene. Benzene content must be determined by Test Method D3606 or D5580.
1.4 Toluene co-elutes with 2,3,3-trimethylpentane. Toluene content must be determined by Test Method D3606 or D5580.
1.5 Although a majority of the individual hydrocarbons present are determined, some co-elution of compounds is encountered. If this procedure is utilized to estimate bulk hydrocarbon group-type composition (PONA) the user of such data should be cautioned that error may be encountered due to co-elution and a lack of identification of all components present. Samples containing significant amounts of naphthenic (for example, virgin naphthas) constituents above n-octane may reflect significant errors in PONA type groupings. Based on the interlaboratory cooperative study, this procedure is applicable to samples having concentrations of olefins less than 20 % by mass. However, significant interfering coelution with the olefins above C7 is possible, particularly if blending components or their higher boiling cuts such as those derived from fluid catalytic cracking (FCC) are analyzed, and the total olefin content may not be accurate. Many of the olefins in spark ignition fuels are at a concentration below 0.10 %; they are not reported by this test method and may bias the total olefin results low.
1.5.1 Total olefins in the samples may be obtained or confirmed, or both, by Test Method D1319 (volume %) or other test methods, such as those based on multidimensional PONA type of instruments.
1.6 If water is or is suspected of being present, its concentration may be determined, if desired, by the use of Test Method D1744. Other compounds containing sulfur, nitrogen, and so forth, may also be present, and may co-elute with the hydrocarbons. If determination of these specific compounds is required, it is recommended that test methods for these specific materials be used, such as Test Method D5623 for sulfur compounds.
1.7 The values stated in SI units are to be regarded as the standard. The values given in parentheses are provided for information only.
1.8 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.
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Designation: D6733 − 01 (Reapproved 2016)
Standard Test Method for
Determination of Individual Components in Spark Ignition
Engine Fuels by 50-Metre Capillary High Resolution Gas
1
Chromatography
This standard is issued under the fixed designation D6733; 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 applicabletosampleshavingconcentrationsofolefinslessthan
20 % by mass. However, significant interfering coelution with
1.1 This test method covers the determination of individual
the olefins above C is possible, particularly if blending
7
hydrocarbon components of spark-ignition engine fuels with
components or their higher boiling cuts such as those derived
boiling ranges up to 225 °C. Other light liquid hydrocarbon
from fluid catalytic cracking (FCC) are analyzed, and the total
mixtures typically encountered in petroleum refining
olefincontentmaynotbeaccurate.Manyoftheolefinsinspark
operations, such as, blending stocks (naphthas, reformates,
ignition fuels are at a concentration below 0.10 %; they are not
alkylates, and so forth) may also be analyzed; however,
reported by this test method and may bias the total olefin
statistical data was obtained only with blended spark-ignition
results low.
engine fuels. The tables in Annex A1 enumerate the compo-
1.5.1 Total olefins in the samples may be obtained or
nents reported. Component concentrations are determined in
confirmed, or both, by Test Method D1319 (volume %) or
the range from 0.10 % to 15 % by mass.The procedure may be
other test methods, such as those based on multidimensional
applicabletohigherandlowerconcentrationsfortheindividual
PONA type of instruments.
components; however, the user must verify the accuracy if the
procedures are used for components with concentrations out- 1.6 If water is or is suspected of being present, its concen-
side the specified ranges. tration may be determined, if desired, by the use of Test
Method D1744. Other compounds containing sulfur, nitrogen,
1.2 This test method is applicable also to spark-ignition
and so forth, may also be present, and may co-elute with the
engine fuel blends containing oxygenated components.
hydrocarbons. If determination of these specific compounds is
However, in this case, the oxygenate content must be deter-
required, it is recommended that test methods for these specific
mined by Test Methods D5599 or D4815.
materials be used, such as Test Method D5623 for sulfur
1.3 Benzene co-elutes with 1-methylcyclopentene. Benzene
compounds.
content must be determined by Test Method D3606 or D5580.
1.7 The values stated in SI units are to be regarded as the
1.4 Toluene co-elutes with 2,3,3-trimethylpentane. Toluene
standard. The values given in parentheses are provided for
content must be determined by Test Method D3606 or D5580.
information only.
1.5 Although a majority of the individual hydrocarbons
1.8 This standard does not purport to address all of the
present are determined, some co-elution of compounds is
safety concerns, if any, associated with its use. It is the
encountered. If this procedure is utilized to estimate bulk
responsibility of the user of this standard to establish appro-
hydrocarbon group-type composition (PONA) the user of such
priate safety and health practices and determine the applica-
data should be cautioned that error may be encountered due to
bility of regulatory limitations prior to use.
co-elution and a lack of identification of all components
present. Samples containing significant amounts of naphthenic
2. Referenced Documents
(for example, virgin naphthas) constituents above n-octane
2
2.1 ASTM Standards:
may reflect significant errors in PONA type groupings. Based
D1319 Test Method for Hydrocarbon Types in Liquid Petro-
on the interlaboratory cooperative study, this procedure is
leum Products by Fluorescent Indicator Adsorption
D1744 Test Method for Determination of Water in Liquid
1
This test method is under the jurisdiction of ASTM Committee D02 on
Petroleum Products, Liquid Fuels, and Lubricantsand is the direct responsibility of
2
Subcommittee D02.04.0L on Gas Chromatography Methods. For referenced ASTM standards, visit the ASTM website, www.astm.org, or
Current edition approved April 1, 2016. Published June 2016. Originally contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM
approved in 2001. Last previous edition approved in 2011 as D6733 – 01 (2011). Standards volume information, refer to the standard’s Document Summary page on
DOI: 10.1520/D6733-01R16. the ASTM website.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, Wes
...
This document is not an ASTM standard and is intended only to provide the user of an ASTM standard an indication of what changes have been made to the previous version. Because
it may not be technically possible to adequately depict all changes accurately, ASTM recommends that users consult prior editions as appropriate. In all cases only the current version
of the standard as published by ASTM is to be considered the official document.
Designation: D6733 − 01 (Reapproved 2011) D6733 − 01 (Reapproved 2016)
Standard Test Method for
Determination of Individual Components in Spark Ignition
Engine Fuels by 50-Metre Capillary High Resolution Gas
1
Chromatography
This standard is issued under the fixed designation D6733; 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
1.1 This test method covers the determination of individual hydrocarbon components of spark-ignition engine fuels with boiling
ranges up to 225°C.225 °C. Other light liquid hydrocarbon mixtures typically encountered in petroleum refining operations, such
as, blending stocks (naphthas, reformates, alkylates, and so forth) may also be analyzed; however, statistical data was obtained only
with blended spark-ignition engine fuels. The tables in Annex A1 enumerate the components reported. Component concentrations
are determined in the range from 0.10 to 15 mass %. 0.10 % to 15 % by mass. The procedure may be applicable to higher and lower
concentrations for the individual components; however, the user must verify the accuracy if the procedures are used for
components with concentrations outside the specified ranges.
1.2 This test method is applicable also to spark-ignition engine fuel blends containing oxygenated components. However, in this
case, the oxygenate content must be determined by Test Methods D5599 or D4815.
1.3 Benzene co-elutes with 1-methylcyclopentene. Benzene content must be determined by Test Method D3606 or D5580.
1.4 Toluene co-elutes with 2,3,3-trimethylpentane. Toluene content must be determined by Test Method D3606 or D5580.
1.5 Although a majority of the individual hydrocarbons present are determined, some co-elution of compounds is encountered.
If this procedure is utilized to estimate bulk hydrocarbon group-type composition (PONA) the user of such data should be
cautioned that error may be encountered due to co-elution and a lack of identification of all components present. Samples
containing significant amounts of naphthenic (for example, virgin naphthas) constituents above n-octane may reflect significant
errors in PONA type groupings. Based on the interlaboratory cooperative study, this procedure is applicable to samples having
concentrations of olefins less than 20 mass %. 20 % by mass. However, significant interfering coelution with the olefins above C
7
is possible, particularly if blending components or their higher boiling cuts such as those derived from fluid catalytic cracking
(FCC) are analyzed, and the total olefin content may not be accurate. Many of the olefins in spark ignition fuels are at a
concentration below 0.10 %; they are not reported by this test method and may bias the total olefin results low.
1.5.1 Total olefins in the samples may be obtained or confirmed, or both, by Test Method D1319 (volume %) or other test
methods, such as those based on multidimensional PONA type of instruments.
1.6 If water is or is suspected of being present, its concentration may be determined, if desired, by the use of Test Method
D1744. Other compounds containing sulfur, nitrogen, and so forth, may also be present, and may co-elute with the hydrocarbons.
If determination of these specific compounds is required, it is recommended that test methods for these specific materials be used,
such as Test Method D5623 for sulfur compounds.
1.7 The values stated in SI units are to be regarded as the standard. The values given in parentheses are provided for information
only.
1.8 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.
1
This test method is under the jurisdiction of ASTM Committee D02 on Petroleum Products Products, Liquid Fuels, and Lubricantsand is the direct responsibility of
Subcommittee D02.04.0L on Gas Chromatography Methods.
Current edition approved May 1, 2011April 1, 2016. Published May 2011June 2016. Originally approved in 2001. Last previous edition approved in 20062011 as
D6733 – 01 (2011). (2006). DOI: 10.1520/D6733-01R11.10.1520/D6733-01R16.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. Uni
...
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