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ASTM D 7493 : 2014 : R2018

Superseded

Superseded

A superseded Standard is one, which is fully replaced by another Standard, which is a new edition of the same Standard.

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Standard Test Method for Online Measurement of Sulfur Compounds in Natural Gas and Gaseous Fuels by Gas Chromatograph and Electrochemical Detection

Available format(s)

Hardcopy , PDF

Superseded date

25-08-2023

Superseded by

ASTM D 7493 : 2022

Language(s)

English

Published date

24-07-2018

€67.30
Excluding VAT

Committee
D 03
DocumentType
Test Method
Pages
7
PublisherName
American Society for Testing and Materials
Status
Superseded
SupersededBy
Supersedes

1.1This test method is for on-line measurement of volatile sulfur-containing compounds in gaseous fuels by gas chromatography (GC) and electrochemical (EC) detection. This test method is applicable to hydrogen sulfide, C1 to C4 mercaptans, sulfides and tetrahydrothiophene (THT).

1.1.1Carbonyl sulfide (COS) is not covered in this test method.

1.1.2The detection range for sulfur compounds is approximately from 0.1 to 100 ppmv (mL/m3) or 0.1 to 100 mg/m3. The detection range may vary depending on the sample injection volume, chromatographic peak separation and the sensitivity to the specific EC detector.

1.2This test method describes a GC-EC method employing packed GC columns and a specific detector for natural gas and other gaseous fuel composed of mainly light (C4 and smaller) hydrocarbons. Alternative GC columns, detector designs and instrument parameters may be used, provided that chromatographic separation, quality control and measurement objectives needed to comply with user, or regulator needs or both, are achieved.

1.3This test method does not intend to identify and measure all individual sulfur species, and is mainly employed for monitoring naturally occurring reduced sulfur compounds commonly found in natural gas and fuel gases or employed as an odorant in these gases.

1.4The test method is typically employed in repetitive or continuous on-line monitoring of sulfur components in natural gas and fuel gases using a single sulfur calibration standard. Need for a multipoint calibration curve or quality control procedures can be satisfied by making use of procedures delineated in Test Methods D5504, D5623, D6228, D6968, ISO 19739, or GPA 2199.

1.5The test method can be used for measurement of all sulfur compounds listed in Table 1 in air or other gaseous matrices, provided that no compounds that can interfere with the GC separation and electrochemical detection are present.

1.6This test method is written as a companion to Practices D5287, D7165 and D7166.

1.7The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard.

1.8This 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.

1.9This 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.

ASTM D 8080 : 2021 Standard Specification for Compressed Natural Gas (CNG) and Liquefied Natural Gas (LNG) Used as a Motor Vehicle Fuel

ASTM D 6968 : 2003 : R2015 Standard Test Method for Simultaneous Measurement of Sulfur Compounds and Minor Hydrocarbons in Natural Gas and Gaseous Fuels by Gas Chromatography and Atomic Emission Detection (Withdrawn 2024)
ASTM D 5623 : 2019 Standard Test Method for Sulfur Compounds in Light Petroleum Liquids by Gas Chromatography and Sulfur Selective Detection
ASTM D 4150 : 2021 : REV A Standard Terminology Relating to Gaseous Fuels
ASTM D 4150 : 2020 : REV A Standard Terminology Relating to Gaseous Fuels
ASTM D 3609 : 2000 : R2014 Standard Practice for Calibration Techniques Using Permeation Tubes
ASTM D 5287 : 1997 Standard Practice for Automatic Sampling of Gaseous Fuels
ASTM D 7165 : 2022 Standard Practice for Gas Chromatograph Based On-line/At-line Analysis for Sulfur Content of Gaseous Fuels
ASTM D 6228 : 1998 Standard Test Method for Determination of Sulfur Compounds in Natural Gas and Gaseous Fuels by Gas Chromatography and Flame Photometric Detection
ASTM D 7165 : 2010 : R2015 Standard Practice for Gas Chromatograph Based On-line/At-line Analysis for Sulfur Content of Gaseous Fuels
ASTM D 7166 : 2005 Standard Practice for Total Sulfur Analyzer Based On-line/At-line for Sulfur Content of Gaseous Fuels
ASTM D 7166 : 2010 : R2015 Standard Practice for Total Sulfur Analyzer Based On-line/At-line for Sulfur Content of Gaseous Fuels
ASTM D 7165 : 2006 Standard Practice for Gas Chromatograph Based On-line/At-line Analysis for Sulfur Content of Gaseous Fuels
ASTM D 3609 : 2022 Standard Practice for Calibration Techniques Using Permeation Tubes
ASTM D 3609 : 2000 Standard Practice for Calibration Techniques Using Permeation Tubes
ASTM D 4150 : 2000 Standard Terminology Relating to Gaseous Fuels
ASTM D 5287 : 2008 : R2015 Standard Practice for Automatic Sampling of Gaseous Fuels (Withdrawn 2024)
ASTM D 4626 : 1995 : R2019 Standard Practice for Calculation of Gas Chromatographic Response Factors
ASTM D 5504 : 1998 Standard Test Method for Determination of Sulfur Compounds in Natural Gas and Gaseous Fuels by Gas Chromatography and Chemiluminescence
ASTM D 6968 : 2003 Standard Test Method for Simultaneous Measurement of Sulfur Compounds and Minor Hydrocarbons in Natural Gas and Gaseous Fuels by Gas Chromatography and Atomic Emission Detection
ASTM D 4626 : 1995 : R2000 Standard Practice for Calculation of Gas Chromatographic Response Factors
ASTM D 4150 : 2021 Standard Terminology Relating to Gaseous Fuels
ASTM D 4150 : 2008 : R2016 Standard Terminology Relating to Gaseous Fuels
ASTM D 4150 : 2021 : REV B Standard Terminology Relating to Gaseous Fuels
ASTM D 5623 : 1994 : R1999 : EDT 1 Standard Test Method for Sulfur Compounds in Light Petroleum Liquids by Gas Chromatography and Sulfur Selective Detection

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