ASTM D7676-23
(Practice)Standard Practice for Screening Organic Halides Contained in Hydrogen or Other Gaseous Fuels
Standard Practice for Screening Organic Halides Contained in Hydrogen or Other Gaseous Fuels
SIGNIFICANCE AND USE
5.1 Low operating temperature fuel cells such as proton exchange membrane fuel cells require high purity hydrogen for maximum material performance and lifetime. Analysis to at least 0.05 µmol/mol concentration of total halogenated (measured as methyl fluoride) in hydrogen is necessary for assuring a feed gas of sufficient purity to satisfy fuel cell system needs as defined in ISO 14687, SAE J2719, and the California Code of Regulations, or as specified in regulatory codes.
5.2 Although not intended for application to gases other than hydrogen, techniques within this screening method can be applied to other gaseous samples requiring total halogenated hydrocarbon content determination. The method must be validated when used to test fuels or other gaseous samples that may contain interfering compounds.
SCOPE
1.1 This practice covers the screening of organic halide content of gaseous fuels using electron capture detection. Although primarily intended for determining organic halides in hydrogen used as a fuel for fuel cell or internal combustion engine powered vehicles, this screening method can also be used, if qualified, to measure organic halides in other gaseous fuels and gaseous matrices.
1.2 The procedure described in this method was designed to screen organic halides in hydrogen to a level much less than required by SAE J2719 and the California Code of Regulations, Title 4, Division 9, Chapter 6, Article 8, Sections 4180 – 4181. It will yield false positive result to other compounds that show response to the electron capture detector (ECD). Samples that do not pass the criteria of this screening process shall be tested to quantify and qualify the contaminants using Test Method D7892.
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.
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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.
Designation: D7676 − 23
Standard Practice for
Screening Organic Halides Contained in Hydrogen or Other
1
Gaseous Fuels
This standard is issued under the fixed designation D7676; 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 2. Referenced Documents
2
2.1 ASTM Standards:
1.1 This practice covers the screening of organic halide
content of gaseous fuels using electron capture detection. D1265 Practice for Sampling Liquefied Petroleum (LP)
Gases, Manual Method
Although primarily intended for determining organic halides in
hydrogen used as a fuel for fuel cell or internal combustion D3700 Practice for Obtaining LPG Samples Using a Float-
ing Piston Cylinder
engine powered vehicles, this screening method can also be
used, if qualified, to measure organic halides in other gaseous D4150 Terminology Relating to Gaseous Fuels
D7606 Practice for Sampling of High Pressure Hydrogen
fuels and gaseous matrices.
and Related Fuel Cell Feed Gases
1.2 The procedure described in this method was designed to
D7892 Test Method for Determination of Total Organic
screen organic halides in hydrogen to a level much less than
Halides, Total Non-Methane Hydrocarbons, and Formal-
required by SAE J2719 and the California Code of
dehyde in Hydrogen Fuel by Gas Chromatography/Mass
Regulations, Title 4, Division 9, Chapter 6, Article 8, Sections
Spectrometry
4180 – 4181. It will yield false positive result to other
3
2.2 ISO Standard:
compounds that show response to the electron capture detector
ISO 14687 Hydrogen Fuel — Product Specification
(ECD). Samples that do not pass the criteria of this screening
4
2.3 SAE Standard:
process shall be tested to quantify and qualify the contaminants
SAE J2719 Hydrogen Fuel Quality for Fuel Cell Vehicles
using Test Method D7892.
5
2.4 Additional Document:
1.3 The values stated in SI units are to be regarded as
California Code of Regulations Title 4, Division 9, Chapter
standard. The values given in parentheses after SI units are
6, Article 8, Sections 4180 – 4181
provided for information only and are not considered standard.
3. Terminology
1.4 This standard does not purport to address all of the
3.1 Definitions—For definitions of general terms used in
safety concerns, if any, associated with its use. It is the
D03 Gaseous Fuels standards, refer to Terminology D4150.
responsibility of the user of this standard to establish appro-
priate safety, health, and environmental practices and deter-
3.2 Definitions of Terms Specific to This Standard:
mine the applicability of regulatory limitations prior to use.
3.2.1 electron capture detector (ECD), n—detects organic
1.5 This international standard was developed in accor-
halides by the reduction of a standing detector current due to
dance with internationally recognized principles on standard-
the capture of detector current electrons by the halogenated
ization established in the Decision on Principles for the
hydrocarbons.
Development of International Standards, Guides and Recom-
mendations issued by the World Trade Organization Technical
2
For referenced ASTM standards, visit the ASTM website, www.astm.org, or
Barriers to Trade (TBT) Committee.
contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM
Standards volume information, refer to the standard’s Document Summary page on
the ASTM website.
3
Available from International Organization for Standardization (ISO), ISO
1
This practice is under the jurisdiction of ASTM Committee D03 on Gaseous Central Secretariat, BIBC II, Chemin de Blandonnet 8, CP 401, 1214 Vernier,
Fuels and is the direct responsibility of Subcommittee D03.14 on Hydrogen and Geneva, Switzerland, http://www.iso.org.
4
Fuel Cells. Available from SAE International (SAE), 400 Commonwealth Dr., Warrendale,
Current edition approved Nov. 1, 2023. Published November 2023. Originally PA 15096, http://www.sae.org.
5
approved in 2018. Last previous edition approved in 2018 as D7676 – 18. DOI: Available from California Department of Food and Agriculture, 1220 N Street,
10.1520/D7676-23. Sacramento, CA 95814, https://www.cdfa.ca.gov.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
1
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D7676 − 23
3.2.2 organic halide, n—any compound containing carbon 6.2 The electron capture detector is very sensitive, typically
and a halogen (fluorine, chlorine, bro
...
This document is not an ASTM standard and is intended only to provide the user of an ASTM standard an indication of what changes have been made to the previous version. Because
it may not be technically possible to adequately depict all changes accurately, ASTM recommends that users consult prior editions as appropriate. In all cases only the current version
of the standard as published by ASTM is to be considered the official document.
Designation: D7676 − 18 D7676 − 23
Standard Practice for
Screening Organic Halides Contained in Hydrogen or Other
1
Gaseous Fuels
This standard is issued under the fixed designation D7676; 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 practice covers the screening of organic halide content of gaseous fuels using electron capture detection. Although
primarily intended for determining organic halides in hydrogen used as a fuel for fuel cell or internal combustion engine powered
vehicles, this screening method can also be used, if qualified, to measure organic halides in other gaseous fuels and gaseous
matrices.
1.2 The procedure described in this method was designed to screen organic halides in hydrogen to a level much less than required
by SAE J2719 and the California Code of Regulations, Title 4, Division 9, Chapter 6, Article 8, Sections 4180 – 4181. It will yield
false positive result to other compounds that show response to the ECD detector. electron capture detector (ECD). Samples that
do not pass the criteria of this screening process shall be tested to quantify and qualify the contaminants using Test Method D7892.
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
2
2.1 ASTM Standards:
D1265 Practice for Sampling Liquefied Petroleum (LP) Gases, Manual Method
D3700 Practice for Obtaining LPG Samples Using a Floating Piston Cylinder
D4150 Terminology Relating to Gaseous Fuels
D7606 Practice for Sampling of High Pressure Hydrogen and Related Fuel Cell Feed Gases
D7892 Test Method for Determination of Total Organic Halides, Total Non-Methane Hydrocarbons, and Formaldehyde in
Hydrogen Fuel by Gas Chromatography/Mass Spectrometry
1
This practice is under the jurisdiction of ASTM Committee D03 on Gaseous Fuels and is the direct responsibility of Subcommittee D03.14 on Hydrogen and Fuel Cells.
Current edition approved Dec. 15, 2018Nov. 1, 2023. Published February 2019November 2023. Originally approved in 2018. Last previous edition approved in 2018 as
D7676 – 18. DOI: 10.1520/D7676-18.10.1520/D7676-23.
2
For referenced ASTM standards, visit the ASTM website, www.astm.org, or contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM Standards
volume information, refer to the standard’s Document Summary page on the ASTM website.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
1
---------------------- Page: 1 ----------------------
D7676 − 23
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2.2 ISO Standard:
ISO TS 14687-214687 Hydrogen Fuel — Product Specification — Part 2: Proton Exchange Membrane (PEM) Fuel Cell
Applications for Road Vehicles
4
2.3 SAE Standard:
SAE J2719 Hydrogen Fuel Quality for Fuel Cell Vehicles
5
2.4 Additional Document:
California Code of Regulations Title 4, Division 9, Chapter 6, Article 8, Sections 4180 – 4181
3. Terminology
3.1 Definitions—For definitions of general terms used in D03 Gaseous Fuels standards, refer to Terminology D4150.
3.2 Definitions:Definitions of Terms Specific to This Standard:
3.2.1 electron capture detector (ECD), n—detects organic halides by the reduction of a standing detector current due to the capture
of detector current electrons by the halogenated hydrocarbons.
3.1.2 fuel cell grade hydrogen, n—hydrogen satisfying the specifications in SAE J2719.
3.2.2 organic halide, n—any compound containing carbon and a halogen (fluorine, chlorine, bromine, or iodine).
3.2.3 total organic halides, n—the sum concentration of all compounds containing carbon and at least one
...
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