ASTM D5917-99

Designation: D 5917 – 99
AMERICAN SOCIETY FOR TESTING AND MATERIALS
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Reprinted from the Annual Book of ASTM Standards. Copyright ASTM
Standard Test Method for
Trace Impurities in Monocyclic Aromatic Hydrocarbons by
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Gas Chromatography and External Calibration
This standard is issued under the fixed designation D 5917; 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 * D 2360 Test Method for Trace Impurities in Monocyclic
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Aromatic Hydrocarbons by Gas Chromatography
1.1 This test method covers the determination of the total
D 3437 Practice for Sampling and Handling Liquid Cyclic
nonaromatic hydrocarbons and trace monocyclic aromatic
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Products
hydrocarbons in toluene, mixed xylenes, and p-xylenes by gas
D 4052 Test Method for Density and Relative Density of
chromatography. The purity of toluene, mixed xylenes, or
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Liquids by Digital Density Meter
p-xylenes can also be calculated. Calibration of the gas
D 4307 Practice for Preparation of Liquid Blends for Use as
chromatographic system is done by the external standard
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Analytical Standards
calibration technique. A similar test method, using the internal
D 4534 Test Method for Benzene Content of Cyclic Prod-
standard calibration technique, is Test Method D 2360.
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ucts by Gas Chromatography
1.2 Total aliphatic hydrocarbons containing 1 through 10
D 4790 Terminology of Aromatic Hydrocarbons and Re-
carbon atoms (methane through decanes) can be detected by
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lated Chemicals
this test method at concentrations ranging from 0.001 to 2.500
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D 5211 Specification for Xylenes for p-Xylene Feedstock
weight %.
E 29 Practice for Using Significant Digits in Test Data to
1.2.1 A small amount of benzene in mixed xylenes or
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Determine Conformance with Specifications
p-xylenes may not be distinguished from the nonaromatics and
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E 260 Practice for Packed Column Gas Chromatography
the concentrations are determined as a composite (see 6.1).
E 355 Practice for Gas Chromatography Terms and Rela-
1.3 Monocyclic aromatic hydrocarbon impurities containing
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tionships
6 through 9 carbon atoms (benzene through C aromatics) can
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E 691 Practice for Conducting an Interlaboratory Test Pro-
be detected by this test method at individual concentrations
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gram to Determine the Precision of Test Methods
ranging from 0.001 to 1.000 weight %.
E 1510 Practice for Installing Fused Silica Open Tubular
1.4 The following applies to all specified limits in this test
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Capillary Columns in Gas Chromatographs
method: for purposes of determining conformance with this
2.2 Other Document:
test method, an observed value or a calculated value shall be
OSHA Regulations, 29 CFR, paragraphs 1910.1000 and
rounded off “to the nearest unit” in the last right-hand digit
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1910.1200
used in expressing the specification limit, in accordance with
the rounding-off method of Practice E 29.
3. Terminology
1.5 This standard does not purport to address all of the
3.1 See Terminology D 4790 for definitions of terms used in
safety concerns, if any, associated with its use. It is the
this test method.
responsibility of the user of this standard to establish appro-
priate safety and health practices and determine the applica-
4. Summary of Test Method
bility of regulatory limitations prior to use. For specific hazard
4.1 A repeatable volume of the specimen to be analyzed is
statement, see Section 9.
precisely injected into a gas chromatograph equipped with a
2. Referenced Documents flame ionization detector (FID). The peak area of each impurity
is measured. Concentration of each impurity is determined
2.1 ASTM Standards:
2 from the linear calibration curve of peak area versus concen-
D 841 Specification for Nitration Grade Toluene
tration. Purity by gas chromatography (GC) is calculated by
D 2306 Test Method for C Hydrocarbon Analysis by Gas
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2 subtracting the sum of the impurities found from 100.00.
Chromatography
Results are reported in weight percent.
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This test method is under the jurisdiction of ASTM Committee D-16 on
Aromatic Hydrocarbons and Related Chemicals and is the direct responsibility of
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Subcommittee D16.0E on Instrumental Analysis. Annual Book of ASTM Standards, Vol 05.02.
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Current edition approved Jan. 10, 1999. Published March 1999. Originally Annual Book of ASTM Standards, Vol 14.02.
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published as D 5917–96. Last previous edition D 5917–98. Available from Superintendent of Documents, U.S. Government Printing
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Annual Book of ASTM Standards, Vol 06.04. Office, Washington, DC 20402.
*A Summary of Changes section appears at the end of this standard.
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D 5917
5. Significance and Use 7.3 Recorder—Electronic integration is recommended.
7.4 Injector—The
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