ASTM D5623-24

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of the standard as published by ASTM is to be considered the official document.
Designation: D5623 − 19 D5623 − 24
Standard Test Method for
Sulfur Compounds in Light Petroleum Liquids by Gas
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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. 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 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 mg ⁄kg 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 standard. The values given in parentheses after SI units are provided for
information only and are not considered standard.
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, health, and environmental practices and determine the applicability of
regulatory limitations prior to use.
1.5 This international standard was developed in accordance with internationally recognized principles on standardization
established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued
by the World Trade Organization Technical Barriers to Trade (TBT) Committee.
2. Referenced Documents
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2.1 ASTM Standards:
D2622 Test Method for Sulfur in Petroleum Products by Wavelength Dispersive X-ray Fluorescence Spectrometry
D3120 Test Method for Trace Quantities of Sulfur in Light Liquid Petroleum Hydrocarbons by Oxidative Microcoulometry
D4057 Practice for Manual Sampling of Petroleum and Petroleum Products
D4175 Terminology Relating to Petroleum Products, Liquid Fuels, and Lubricants
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This test method is under the jurisdiction of ASTM Committee D02 on Petroleum Products, Liquid Fuels, and Lubricants and is the direct responsibility of Subcommittee
D02.04.0L on Gas Chromatography Methods.
Current edition approved July 1, 2019March 1, 2024. Published August 2019March 2024. Originally approved in 1994. Last previous edition approved in 20142019 as
D5623 – 94 (2014).D5623 – 19. DOI: 10.1520/D5623-19.10.1520/D5623-24.
2
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volume information, refer to the standard’s Document Summary page on the ASTM website.
*A Summary of Changes section appears at the end of this standard
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D5623 − 24
D4307 Practice for Preparation of Liquid Blends for Use as Analytical Standards
D4626 Practice for Calculation of Gas Chromatographic Response Factors
D5504 Test Method for Determination of Sulfur Compounds in Natural Gas and Gaseous Fuels by Gas Chromatography and
Chemiluminescence
E355 Practice for Gas Chromatography Terms and Relationships
2.2 Other Standard:
GPA 2199 Determination of Specific Sulfur Compounds by Capillary Gas Chromatography and Sulfur Chemiluminescence
Detection
3. Terminology
3.1 Definitions:
3.1.1 For definitions of terms used in this test method, refer to Terminology
...