ASTM D5186-99
(Test Method)Standard Test Method for Determination of Aromatic Content and Polynuclear Aromatic Content of Diesel Fuels and Aviation Turbine Fuels by Supercritical Fluid Chromatography
Standard Test Method for Determination of Aromatic Content and Polynuclear Aromatic Content of Diesel Fuels and Aviation Turbine Fuels by Supercritical Fluid Chromatography
SCOPE
1.1 This test method covers the determination of the total amounts of monoaromatic and polynuclear aromatic hydrocarbon compounds in motor diesel fuels, aviation turbine fuels, and blend stocks by supercritical fluid chromatography (SFC). The range of aromatics concentration to which this test method is applicable is from 1 to 75 mass %. The range of polynuclear aromatic hydrocarbon concentrations to which this test method is applicable is from 0.5 to 50 mass %.
1.2 The values stated in SI units are to be regarded as the standard. The values given in parentheses are for information only.
1.3 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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NOTICE: This standard has either been superceded and replaced by a new version or discontinued.
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An American National Standard
Designation: D 5186 – 99
Standard Test Method for
Determination of the Aromatic Content and Polynuclear
Aromatic Content of Diesel Fuels and Aviation Turbine Fuels
1
By Supercritical Fluid Chromatography
This standard is issued under the fixed designation D 5186; 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 (e) indicates an editorial change since the last revision or reapproval.
1. Scope group includes benzene, alkyl-substituted benzenes, indans,
tetralins, alkyl-substituted indans, and alkyl-substituted tetra-
1.1 This test method covers the determination of the total
lins.
amounts of monoaromatic and polynuclear aromatic hydrocar-
3.1.4 polynuclear aromatic hydrocarbons, n— all hydrocar-
bon compounds in motor diesel fuels, aviation turbine fuels,
bon compounds containing two or more aromatic rings. These
and blend stocks by supercritical fluid chromatography (SFC).
rings may be fused as in naphthalene and phenanthrene, or
The range of aromatics concentration to which this test method
separate as in biphenyl.
is applicable is from 1 to 75 mass %. The range of polynuclear
3.1.5 restrictor, n—a device, attached to the outlet of a
aromatic hydrocarbon concentrations to which this test method
chromatographic column, to restrict the mobile phase flow
is applicable is from 0.5 to 50 mass %.
such that the mobile phase is maintained in the supercritical
1.2 The values stated in SI units are to be regarded as
state throughout the chromatographic column.
standard. The values stated in inch-pound units are for infor-
3.1.6 supercritical fluid, n—a fluid maintained in a thermo-
mation only.
dynamic state above its critical temperature and critical pres-
1.3 This standard does not purport to address all of the
sure.
safety concerns, if any, associated with its use. It is the
3.1.7 supercritical fluid chromatography, n— a class of
responsibility of the user of this standard to establish appro-
chromatography that employs supercritical fluids as mobile
priate safety and health practices and determine the applica-
phases.
bility of regulatory limitations prior to use.
4. Summary of Test Method
2. Referenced Documents
4.1 A small aliquot of the fuel sample is injected onto a
2.1 ASTM Standards:
packed silica adsorption column and eluted using supercritical
D 1319 Test Method for Hydrocarbon Types in Liquid
2
carbon dioxide mobile phase. Monoaromatics and polynuclear
Petroleum Products by Fluorescent Indicator Adsorption
2
aromatics in the sample are separated from nonaromatics and
D 1655 Specification for Aviation Turbine Fuels
detected using a flame ionization detector.
D 2425 Test Method for Hydrocarbon Types in Middle
2
4.2 The detector response to hydrocarbons is recorded
Distillates by Mass Spectrometry
throughout the analysis time. The chromatographic areas
3. Terminology
corresponding to the monoaromatic, polynuclear aromatic, and
nonaromatic components are determined and the mass %
3.1 Definitions of Terms Specific to This Standard:
content of each of these groups in the fuel is calculated by area
3.1.1 critical pressure, n—that pressure needed to condense
normalization.
a gas at the critical temperature.
3.1.2 critical temperature, n—the highest temperature at
5. Significance and Use
which a gaseous fluid may be converted to a liquid by means
5.1 The aromatic hydrocarbon content of motor diesel fuels
of compression.
is a factor that can affect their cetane number and exhaust
3.1.3 mononuclear aromatic hydrocarbons, n— hydrocar-
emissions. The aromatic hydrocarbon content and the naphtha-
bon compounds containing exactly one aromatic ring. This
lenes content of aviation turbine fuels affect their combustion
characteristics and smoke-forming tendencies. These proper-
1
This test method is under the jurisdiction of ASTM Committee D-2 on
ties represent specifications for aviation turbine fuels (see
Petroleum Products and Lubricants and is the direct responsibility of Subcommittee
Specification D 1655).
D02.04 on Hydrocarbon Analysis.
Current edition approved April 10, 1999. Published June 1999. Originally
published as D 5186 – 91. Last previous edition D 5186 – 96.
2
Annual Book of ASTM Standards, Vol 05.01.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.
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NOTICE: This standard has either been superceded and replaced by a new version or discontinued.
Contact ASTM International (www.astm.org) for the latest information.
D5186–99
TABLE 2 Theoretical Response Factors
5.2 The United States Environmental Protection Agency
(USEPA) re
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