ASTM D5623-94(2014)
(Test Method)Standard Test Method for Sulfur Compounds in Light Petroleum Liquids by Gas Chromatography and Sulfur Selective Detection
Standard Test Method for Sulfur Compounds in Light Petroleum Liquids by Gas Chromatography and Sulfur Selective Detection
SIGNIFICANCE AND USE
4.1 Gas chromatography with sulfur selective detection provides a rapid means to identify and quantify sulfur compounds in various petroleum feeds and products. Often these materials contain varying amounts and types of sulfur compounds. Many sulfur compounds are odorous, corrosive to equipment, and inhibit or destroy catalysts employed in downstream processing. The ability to speciate sulfur compounds in various petroleum liquids is useful in controlling sulfur compounds in finished products and is frequently more important than knowledge of the total sulfur content alone.
SCOPE
1.1 This test method covers the determination of volatile sulfur-containing compounds in light petroleum liquids. This test method is applicable to distillates, gasoline motor fuels (including those containing oxygenates) and other petroleum liquids with a final boiling point of approximately 230°C (450°F) or lower at atmospheric pressure. The applicable concentration range will vary to some extent depending on the nature of the sample and the instrumentation used; however, in most cases, the test method is applicable to the determination of individual sulfur species at levels of 0.1 to 100 mg/kg.
1.2 The test method does not purport to identify all individual sulfur components. Detector response to sulfur is linear and essentially equimolar for all sulfur compounds within the scope (1.1) of this test method; thus both unidentified and known individual compounds are determined. However, many sulfur compounds, for example, hydrogen sulfide and mercaptans, are reactive and their concentration in samples may change during sampling and analysis. Coincidently, the total sulfur content of samples is estimated from the sum of the individual compounds determined; however, this test method is not the preferred method for determination of total sulfur.
1.3 The values stated in SI units are to be regarded as the standard. The values given in parentheses are for information only.
1.4 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
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Standards Content (Sample)
NOTICE: This standard has either been superseded and replaced by a new version or withdrawn.
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Designation: D5623 − 94 (Reapproved 2014)
Standard Test Method for
Sulfur Compounds in Light Petroleum Liquids by Gas
1
Chromatography and Sulfur Selective Detection
This standard is issued under the fixed designation D5623; the number immediately following the designation indicates the year of
original adoption or, in the case of revision, the year of last revision.Anumber in parentheses indicates the year of last reapproval.A
superscript epsilon (´) indicates an editorial change since the last revision or reapproval.
1. Scope 2. Referenced Documents
2
2.1 ASTM Standards:
1.1 This test method covers the determination of volatile
D2622Test Method for Sulfur in Petroleum Products by
sulfur-containing compounds in light petroleum liquids. This
Wavelength Dispersive X-ray Fluorescence Spectrometry
test method is applicable to distillates, gasoline motor fuels
D3120Test Method for Trace Quantities of Sulfur in Light
(including those containing oxygenates) and other petroleum
Liquid Petroleum Hydrocarbons by Oxidative Microcou-
liquids with a final boiling point of approximately 230°C
lometry
(450°F) or lower at atmospheric pressure. The applicable
D4057Practice for Manual Sampling of Petroleum and
concentration range will vary to some extent depending on the
Petroleum Products
natureofthesampleandtheinstrumentationused;however,in
D4307Practice for Preparation of Liquid Blends for Use as
most cases, the test method is applicable to the determination
Analytical Standards
of individual sulfur species at levels of 0.1 to 100 mg/kg.
D4626Practice for Calculation of Gas Chromatographic
1.2 The test method does not purport to identify all indi-
Response Factors
vidual sulfur components. Detector response to sulfur is linear
3. Summary of Test Method
and essentially equimolar for all sulfur compounds within the
3.1 The sample is analyzed by gas chromatography with an
scope (1.1) of this test method; thus both unidentified and
appropriatesulfurselectivedetector.Calibrationisachievedby
known individual compounds are determined. However, many
the use of an appropriate internal or external standard. All
sulfur compounds, for example, hydrogen sulfide and
sulfur compounds are assumed to produce equivalent response
mercaptans, are reactive and their concentration in samples
as sulfur.
may change during sampling and analysis. Coincidently, the
totalsulfurcontentofsamplesisestimatedfromthesumofthe
3.2 Sulfur Detection—As sulfur compounds elute from the
individualcompoundsdetermined;however,thistestmethodis
gas chromatographic column they are quantified by a sulfur
not the preferred method for determination of total sulfur.
selective detector that produces a linear and equimolar re-
sponse to sulfur compounds; for example, a sulfur chemilumi-
1.3 The values stated in SI units are to be regarded as the
nescence detector or atomic emission detector used in the
standard. The values given in parentheses are for information
sulfur channel.
only.
4. Significance and Use
1.4 This standard does not purport to address all of the
4.1 Gas chromatography with sulfur selective detection
safety concerns, if any, associated with its use. It is the
responsibility of the user of this standard to establish appro- provides a rapid means to identify and quantify sulfur com-
pounds in various petroleum feeds and products. Often these
priate safety and health practices and determine the applica-
bility of regulatory limitations prior to use. materials contain varying amounts and types of sulfur com-
pounds. Many sulfur compounds are odorous, corrosive to
equipment, and inhibit or destroy catalysts employed in down-
stream processing.The ability to speciate sulfur compounds in
1
This test method is under the jurisdiction of ASTM Committee D02 on
Petroleum Products, Liquid Fuels, and Lubricants and 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 Jan. 15, 2014. Published February 2014. Originally contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM
approved in 1994. Last previous edition approved in 2009 as D5623–94(2009). Standards volume information, refer to the standard’s Document Summary page on
DOI: 10.1520/D5623-94R14. the ASTM website.
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D5623 − 94 (2014)
TABLE 1 Typical Retention Times for Common Sulfur
various petroleum liquids is useful in controlling sulfur com-
A
Compounds
pounds in finished products and is frequently more important
Sulfur Compounds Retention Time (min)
than knowledge of the total sulfur content alone.
Hydrogen Sulfide 0.95
Carbonyl Sulfide 1.21
...
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