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Standard Test Method for Determination of Total Organic Halides, Total Non-Methane Hydrocarbons, and Formaldehyde in Hydrogen Fuel by Gas Chromatography/Mass SpectrometryTranslate name
STANDARD published on 1.6.2022
Designation standards: ASTM D7892-22
Publication date standards: 1.6.2022
The number of pages: 7
Approximate weight : 21 g (0.05 lbs)
Country: American technical standard
Category: Technical standards ASTM
formaldehyde, high-pressure hydrogen, non-methane hydrocarbons, organic halides,, ICS Number Code 27.075 (Hydrogen technologies)
|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.
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 ( ) and hydrocarbons (including formaldehyde, and ), 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?UnitsThe 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.
|2. Referenced Documents|
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