ASTM D7892-15
(Test Method)Standard Test Method for Determination of Total Organic Halides, Total Non-Methane Hydrocarbons, and Formaldehyde in Hydrogen Fuel by Gas Chromatography/Mass Spectrometry
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 method is used to determine concentrations of total organic halides and total non-methane hydrocarbons (TNMHC) 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.
1.3 Mention of trade names in this standard does not constitute endorsement or recommendation for use. Other manufacturers’ equipment or equipment models can be used.
1.4 The values stated in SI units are to be regarded as standard.
1.5 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 and health practices and determine the applicability of regulatory limitations prior to use.
General Information
Standards Content (Sample)
NOTICE: This standard has either been superseded and replaced by a new version or withdrawn.
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Designation: D7892 − 15
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 2. Referenced Documents
2
2.1 ASTM Standards:
1.1 The gas chromatography/mass spectrometry (GC/MS)
D4150 Terminology Relating to Gaseous Fuels
procedure described in this method is used to determine
D7606 Practice for Sampling of High Pressure Hydrogen
concentrations of total organic halides and total non-methane
and Related Fuel Cell Feed Gases
hydrocarbons (TNMHC) by measurement of individual target
3
2.2 Other Standards:
halocarbons (Table 1) and hydrocarbons (including
SAE J2719 Information Report on the Development of a
formaldehyde, Table 1 and Table 2), respectively. Measure-
Hydrogen Quality Guideline for Fuel Cell Vehicles
ment of these substances is required for application of SAE
J2719 to hydrogen fuel quality where this fuel is intended for
3. Terminology
use in fuel cell vehicles. SAE 2719 states hydrogen fuel is
3.1 Definitions—For definitions of terms use in this test
expected to contain less than 0.05 µmole/mole total haloge-
method, refer to Terminology D4150.
nates (including organic halides), 2 µmole/mole total non-
methane hydrocarbons (C1 Basis, 3.2.16) and 0.01 µmole/mole 3.2 Definitions:
formaldehyde.
3.2.1 absolute pressure—pressure measured with reference
toabsolutezeropressureusuallyexpressedaskPa,mmHg,bar
1.2 Based upon the GC/MS/full scan analysis of a 400 mL
or psi.
hydrogen sample, the reporting limit (RL) is 0.001 µmole/mole
3.2.2 constituent—component (or compound) found within
foreachtargetcompoundlistedinTable1andTable2,withthe
a hydrogen fuel mixture.
exception of 0.002 µmole/mole for ethane and 0.002 µmole/
mole for ethene.
3.2.3 contaminant—contaminant as defined in this applica-
tionisanimpuritythatadverselyaffectsthecomponentswithin
1.3 Mention of trade names in this standard does not
a fuel cell system or hydrogen storage system.
constitute endorsement or recommendation for use. Other
3.2.4 cryogen—a refrigerant is used to obtain very low
manufacturers’ equipment or equipment models can be used.
temperatures. The cryogen used in this method is liquid
1.4 The values stated in SI units are to be regarded as
nitrogen (bp -196 °C).
standard.
3.2.5 dynamic calibration—Calibration of an analytical sys-
1.5 This standard does not purport to address all of the
tem uses gaseous calibration standard generated by diluting a
safety concerns, if any, associated with its use. It is the
known concentration of compressed gaseous standard with a
responsibility of the user of this standard to establish appro-
diluent gas.
priate safety and health practices and determine the applica-
3.2.6 fuel cell grade hydrogen—hydrogen satisfying the
bility of regulatory limitations prior to use.
specifications in SAE J2719.
2
For referenced ASTM standards, visit the ASTM website, www.astm.org, or
1
ThistestmethodisunderthejurisdictionofASTMCommitteeD03onGaseous contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM
Fuels and is the direct responsibility of Subcommittee D03.14 on Hydrogen and Standards volume information, refer to the standard’s Document Summary page on
Fuel Cells. the ASTM website.
3
Current edition approved June 1, 2015. Published July 2015. DOI: 10.1520/ Available from SAE International (SAE), 400 Commonwealth Dr.,Warrendale,
D7892-15. PA 15096, http://www.sae.org.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
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D7892 − 15
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 C
...
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