ASTM D7676-18
(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 (PEFCs) 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 TS 14687-2, 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 ECD detector. 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 − 18
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
1.1 This practice covers the screening of organic halide 2.1 ASTM Standards:
content of gaseous fuels using electron capture detection. D1265 Practice for Sampling Liquefied Petroleum (LP)
Althoughprimarilyintendedfordeterminingorganichalidesin Gases, Manual Method
hydrogen used as a fuel for fuel cell or internal combustion D3700 Practice for Obtaining LPG Samples Using a Float-
engine powered vehicles, this screening method can also be ing Piston Cylinder
used, if qualified, to measure organic halides in other gaseous D7606 Practice for Sampling of High Pressure Hydrogen
fuels and gaseous matrices. and Related Fuel Cell Feed Gases
D7892 Test Method for Determination of Total Organic
1.2 The procedure described in this method was designed to
Halides, Total Non-Methane Hydrocarbons, and Formal-
screen organic halides in hydrogen to a level much less than
dehyde in Hydrogen Fuel by Gas Chromatography/Mass
required by SAE J2719 and the California Code of
Spectrometry
Regulations, Title 4, Division 9, Chapter 6,Article 8, Sections
3
2.2 ISO Standard:
4180 – 4181. It will yield false positive result to other
ISO TS 14687-2 Hydrogen Fuel — Product Specification —
compounds that show response to the ECD detector. Samples
Part 2: Proton Exchange Membrane (PEM) Fuel Cell
that do not pass the criteria of this screening process shall be
Applications for Road Vehicles
tested to quantify and qualify the contaminants using Test
4
2.3 SAE Standard:
Method D7892.
SAE J2719 Hydrogen Fuel Quality for Fuel Cell Vehicles
5
1.3 The values stated in SI units are to be regarded as
2.4 Additional Document:
standard. The values given in parentheses after SI units are
California Code of Regulations Title 4, Division 9, Chapter
provided for information only and are not considered standard.
6, Article 8, Sections 4180 – 4181
1.4 This standard does not purport to address all of the
3. Terminology
safety concerns, if any, associated with its use. It is the
responsibility of the user of this standard to establish appro-
3.1 Definitions:
priate safety, health, and environmental practices and deter-
3.1.1 electron capture detector (ECD), n—detects organic
mine the applicability of regulatory limitations prior to use.
halides by the reduction of a standing detector current due to
1.5 This international standard was developed in accor-
the capture of detector current electrons by the halogenated
dance with internationally recognized principles on standard-
hydrocarbons.
ization established in the Decision on Principles for the
Development of International Standards, Guides and Recom-
2
For referenced ASTM standards, visit the ASTM website, www.astm.org, or
mendations issued by the World Trade Organization Technical
contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM
Barriers to Trade (TBT) Committee. Standards volume information, refer to the standard’s Document Summary page on
the ASTM website.
3
Available from International Organization for Standardization (ISO), ISO
Central Secretariat, BIBC II, Chemin de Blandonnet 8, CP 401, 1214 Vernier,
1
This practice is under the jurisdiction of ASTM Committee D03 on Gaseous Geneva, Switzerland, http://www.iso.org.
4
Fuels and is the direct responsibility of Subcommittee D03.14 on Hydrogen and Available from SAE International (SAE), 400 Commonwealth Dr.,Warrendale,
Fuel Cells. PA 15096, http://www.sae.org.
5
Current edition approved Dec. 15, 2018. Published February 2019. DOI: Available from California Department of Food andAgriculture, 1220 N Street,
10.1520/D7676-18. 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
---------------------- Page: 1 ----------------------
D7676 − 18
3.1.2 fuel cell grade hydrogen, n—hydrogen satisfying the 6.2 The electron capture detector is very sensitive, typically
specifications in SAE J2719. capableofmeasuringorganichalidesto0.0001 µmol⁄mol.Any
interfering contamination of carrier and detector gases with
3.1.3 organic halide, n—any compound containing carbon
either organic halides, oxygen, or water can rende
...
NOTICE: This standard has either been superseded and replaced by a new version or withdrawn.
Contact ASTM International (www.astm.org) for the latest information
Designation: D7676 − 18
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
1.1 This practice covers the screening of organic halide 2.1 ASTM Standards:
content of gaseous fuels using electron capture detection. D1265 Practice for Sampling Liquefied Petroleum (LP)
Although primarily intended for determining organic halides in Gases, Manual Method
hydrogen used as a fuel for fuel cell or internal combustion D3700 Practice for Obtaining LPG Samples Using a Float-
engine powered vehicles, this screening method can also be ing Piston Cylinder
used, if qualified, to measure organic halides in other gaseous D7606 Practice for Sampling of High Pressure Hydrogen
fuels and gaseous matrices. and Related Fuel Cell Feed Gases
D7892 Test Method for Determination of Total Organic
1.2 The procedure described in this method was designed to
Halides, Total Non-Methane Hydrocarbons, and Formal-
screen organic halides in hydrogen to a level much less than
dehyde in Hydrogen Fuel by Gas Chromatography/Mass
required by SAE J2719 and the California Code of
Spectrometry
Regulations, Title 4, Division 9, Chapter 6, Article 8, Sections
3
2.2 ISO Standard:
4180 – 4181. It will yield false positive result to other
ISO TS 14687-2 Hydrogen Fuel — Product Specification —
compounds that show response to the ECD detector. Samples
Part 2: Proton Exchange Membrane (PEM) Fuel Cell
that do not pass the criteria of this screening process shall be
Applications for Road Vehicles
tested to quantify and qualify the contaminants using Test
4
2.3 SAE Standard:
Method D7892.
SAE J2719 Hydrogen Fuel Quality for Fuel Cell Vehicles
1.3 The values stated in SI units are to be regarded as 5
2.4 Additional Document:
standard. The values given in parentheses after SI units are
California Code of Regulations Title 4, Division 9, Chapter
provided for information only and are not considered standard.
6, Article 8, Sections 4180 – 4181
1.4 This standard does not purport to address all of the
3. Terminology
safety concerns, if any, associated with its use. It is the
3.1 Definitions:
responsibility of the user of this standard to establish appro-
priate safety, health, and environmental practices and deter- 3.1.1 electron capture detector (ECD), n—detects organic
halides by the reduction of a standing detector current due to
mine the applicability of regulatory limitations prior to use.
1.5 This international standard was developed in accor- the capture of detector current electrons by the halogenated
hydrocarbons.
dance with internationally recognized principles on standard-
ization established in the Decision on Principles for the
2
Development of International Standards, Guides and Recom- 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
mendations issued by the World Trade Organization Technical
Standards volume information, refer to the standard’s Document Summary page on
Barriers to Trade (TBT) Committee.
the ASTM website.
3
Available from International Organization for Standardization (ISO), ISO
Central Secretariat, BIBC II, Chemin de Blandonnet 8, CP 401, 1214 Vernier,
1
This practice is under the jurisdiction of ASTM Committee D03 on Gaseous Geneva, Switzerland, http://www.iso.org.
4
Fuels and is the direct responsibility of Subcommittee D03.14 on Hydrogen and Available from SAE International (SAE), 400 Commonwealth Dr., Warrendale,
Fuel Cells. PA 15096, http://www.sae.org.
5
Current edition approved Dec. 15, 2018. Published February 2019. DOI: Available from California Department of Food and Agriculture, 1220 N Street,
10.1520/D7676-18. 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
---------------------- Page: 1 ----------------------
D7676 − 18
3.1.2 fuel cell grade hydrogen, n—hydrogen satisfying the 6.2 The electron capture detector is very sensitive, typically
specifications in SAE J2719. capable of measuring organic halides to 0.0001 µmol ⁄mol. Any
interfering contamination of carrier and detector gases with
3.1.3 organic halide, n—any compound containing carbon
either organic halides, oxygen, or water can render the ECD
and a halogen (fluorine, chlorine, bromine, or iodine).
detector either unusable or result in a positive bias. All supply
3
...
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