ASTM D7892-22

Standard Test Method for Determination of Total Organic Halides, Total Non-Methane Hydrocarbons, and Formaldehyde in Hydrogen Fuel by Gas Chromatography/Mass Spectrometry

SIGNIFICANCE AND USE
5.1 Low operating temperature fuel cells such as PEMFCs require high purity hydrogen for optimal performance and longevity. Organic halides and formaldehyde can react with catalyst in PEMs and non-methane hydrocarbons degrade PEM stack performance.
SCOPE
1.1 The gas chromatography/mass spectrometry (GC/MS) procedure described in this test method is used to determine concentrations of total organic halides and total non-methane hydrocarbons (TNMHC) in hydrogen by measurement of individual target halocarbons (Table 1) and hydrocarbons (including formaldehyde, Table 1 and Table 2), respectively.  
1.2 Mention of trade names in this test method does not constitute endorsement or recommendation for use. Other manufacturers’ equipment or equipment models can be used.  
1.3 Units—The values stated in SI units are to be regarded as 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.

General Information

• Status: Published
• Publication Date: 31-May-2022
• ICS: 27.075 - Hydrogen technologies
• Technical Committee: D03 - Gaseous Fuels
• Drafting Committee: D03.14 - Hydrogen and Fuel Cells

Standards Content (Sample)

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: D7892 − 22
Standard Test Method for
Determination of Total Organic Halides, Total Non-Methane
Hydrocarbons, and Formaldehyde in Hydrogen Fuel by Gas
1
Chromatography/Mass Spectrometry
This standard is issued under the fixed designation D7892; 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.
3
1. Scope 2.2 SAE Standard:
SAE J2719 Hydrogen Fuel Quality for Fuel Cell Vehicles
1.1 The gas chromatography/mass spectrometry (GC/MS)
procedure described in this test method is used to determine
3. Terminology
concentrations of total organic halides and total non-methane
3.1 Definitions—For definitions of general terms used in
hydrocarbons (TNMHC) in hydrogen by measurement of
D03 Gaseous Fuels standards, refer to Terminology D4150.
individual target halocarbons (Table 1) and hydrocarbons
(including formaldehyde, Table 1 and Table 2), respectively.
3.2 Abbreviations:
3.2.1 GC—gas chromatograph
1.2 Mention of trade names in this test method does not
3.2.2 m/e—mass to charge ratio
constitute endorsement or recommendation for use. Other
manufacturers’ equipment or equipment models can be used.
3.2.3 MS—mass spectrometer
1.3 Units—The values stated in SI units are to be regarded 3.2.4 ppb(v)—parts per billion as a volume
as standard.
3.2.5 ppm(v)—parts per million as a volume
1.4 This standard does not purport to address all of the
3.2.6 UHP—ultra high purity
safety concerns, if any, associated with its use. It is the
responsibility of the user of this standard to establish appro- 4. Summary of Test Method
priate safety, health, and environmental practices and deter-
4.1 The target compounds in Table 1 and Table 2, which
mine the applicability of regulatory limitations prior to use.
may be contained in a 400 mLhydrogen sample, are cryogeni-
1.5 This international standard was developed in accor-
cally frozen or concentrated onto a glass bead trap at -150 °C.
dance with internationally recognized principles on standard-
The target compounds are slowly desorbed by warming to 10
ization established in the Decision on Principles for the
°C and transferred to a Tenax trap cooled to -60 °C using
Development of International Standards, Guides and Recom-
desorption flow rate of 10 mL/min. This process leaves water
mendations issued by the World Trade Organization Technical
in the glass bead trap and dehydrates the sample. The Tenax
Barriers to Trade (TBT) Committee.
trap is then desorbed by heating to 180 °C and the target
compounds cyro-focused at -170 °C at the entrance to a GC
2. Referenced Documents
column (see 6.5). The cyro-focusing section is then rapidly
2
heated up to 80 °C to release the cryo-focused target
2.1 ASTM Standards:
compounds, which are eventually eluted from the column and
D4150 Terminology Relating to Gaseous Fuels
analyzed using a mass spectrometer scanning from m/e 23 to
D7606 Practice for Sampling of High Pressure Hydrogen
100 for initial 4.5 min and from m/e 34 to 550 the remaining
and Related Fuel Cell Feed Gases
analytical time. The retention times of the target compounds
are listed in Table 1 and Table 2 under the chromatographic
conditions in 6.5.
1
ThistestmethodisunderthejurisdictionofASTMCommitteeD03onGaseous
Fuels and is the direct responsibility of Subcommittee D03.14 on Hydrogen and
5. Significance and Use
Fuel Cells.
CurrenteditionapprovedJune1,2022.PublishedJuly2022.Originallyapproved
5.1 Low operating temperature fuel cells such as PEMFCs
in 2015. Last previous edition approved in 2015 as D7892 – 15. DOI: 10.1520/
require high purity hydrogen for optimal performance and
D7892-22.
2
For referenced ASTM standards, visit the ASTM website, www.astm.org, or
contact ASTM Customer Service at [e-mail]. For Annual Book of ASTM
3
Standards volume information, refer to the standard’s Document Summary page on Available from SAE International (SAE), 400 Commonwealth Dr.,Warrendale,
the ASTM website. PA 15096, http://www.sae.org.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
1

---------------------- Page: 1 ----------------------
D7892 − 22
TABLE 1 Organic Halides
Target Compounds Formulas MW BP°C MP°C CAS No. Retention Time
(min)
1,1,1-Trichloroethane C H Cl 133.4 74 -33 71-55-6 8.876
2 3 3
1,1,2,2-Tetrachloroethane C H Cl 167.9 147 -44 79-34-5 14.627
2 2 4
1,1,2-Trichloroethane C H Cl 133.4 114 -37 79-00-5 11.607
2 3 3
1,2-Dibromoethane C H Br 187.9 1
...

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: D7892 − 15 D7892 − 22
Standard Test Method for
Determination of Total Organic Halides, Total Non-Methane
Hydrocarbons, and Formaldehyde in Hydrogen Fuel by Gas
1
Chromatography/Mass Spectrometry
This standard is issued under the fixed designation D7892; 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 The gas chromatography/mass spectrometry (GC/MS) procedure described in this test method is used to determine
concentrations of total organic halides and total non-methane hydrocarbons (TNMHC) in hydrogen by measurement of individual
target halocarbons (Table 1) and hydrocarbons (including formaldehyde, Table 1 and Table 2), respectively. Measurement of these
substances is required for application of SAE J2719 to hydrogen fuel quality where this fuel is intended for use in fuel cell vehicles.
SAE 2719 states hydrogen fuel is expected to contain less than 0.05 μmole/mole total halogenates (including organic halides), 2
μmole/mole total non-methane hydrocarbons (C1 Basis, 3.2.16) and 0.01 μmole/mole formaldehyde.
1.2 Based upon the GC/MS/full scan analysis of a 400 mL hydrogen sample, the reporting limit (RL) is 0.001 μmole/mole for each
target compound listed in Table 1 and Table 2, with the exception of 0.002 μmole/mole for ethane and 0.002 μmole/mole for ethene.
1.2 Mention of trade names in this standard test method does not constitute endorsement or recommendation for use. Other
manufacturers’ equipment or equipment models can be used.
1.3 Units—The values stated in SI units are to be regarded as 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 safety, health, and healthenvironmental 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:
D4150 Terminology Relating to Gaseous Fuels
D7606 Practice for Sampling of High Pressure Hydrogen and Related Fuel Cell Feed Gases
1
This test method 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 June 1, 2015June 1, 2022. Published July 2015July 2022. Originally approved in 2015. Last previous edition approved in 2015 as D7892 – 15.
DOI: 10.1520/D7892-15.10.1520/D7892-22.
2
For referenced ASTM standards, visit the ASTM website, www.astm.org, or contact ASTM Customer Service at [e-mail]. 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 ----------------------
D7892 − 22
TABLE 1 Organic Halides
Target Compounds Formulas MW BP°C MP°C CAS No. Retention Time
(min)
1,1,1-Trichloroethane C H Cl 133.4 74 -33 71-55-6 8.876
2 3 3
1,1,2,2-Tetrachloroethane C H Cl 167.9 147 -44 79-34-5 14.627
2 2 4
1,1,2-Trichloroethane C H Cl 133.4 114 -37 79-00-5 11.607
2 3 3
1,2-Dibromoethane C H Br 187.9 132 10 106-93-4 12.555
2 4 2
1,1-Dichloroethane C H Cl 99 57 -97 75-34-3 7.034
2 4 2
1,1-Dichloroethene C H Cl 96.9 32 -122 75-35-4 5.927
2 2 2
1,2,4-Trichlorobenzene C H Cl 181.5 214 17 120-82-1 19.795
6 3 3
1,2,3,4-tetrachlorohexafluorobutane C Cl F 303.4 134 0 dl; 73 meso 375-45-1 13.008
4 4 6
1,2-Dichloroethane C H Cl 99 84 -35 107-06-2 8.658
2 4 2
1,2-Dichloropropane C H Cl 113 96 -100 78-87-5 10.006
3 6 2
1,2-Dichlorobenzene C H Cl 147 181 -17 95-50-1 17.334
6 4 2
1,3-Dichlorobenzene C H Cl 147 173 -24 541-73-1 16.799
6 4 2
1,4-Dichlorobenzene C H Cl 147 174 54 106-46-7 16.881
6 4 2
Benzyl Chloride C H Cl 126.6 179 -39 100-44-7 16.769
7 7
Bromodichloromethane CHBrCl 162 90 -57 75-27-4 10.189
2
Bromoform CHBr 252.7 149 8 75-25-2 14.303
3
Bromomethane CH Br 94.9 4 -94 74-83-9 4.326
3
Carbon tetra
...