Released in November 2024, Chinese national standard GB/T 44243-2024 sets out procedures for sampling, analysing and quantifying sulfur compounds, formaldehyde, and organic halides in hydrogen used in proton exchange membrane (PEM) fuel cells for vehicles.
This standard helps ensure the purity and safety of hydrogen by identifying trace-level impurities that could compromise fuel cell performance or pose risks to health and the environment.
What’s involved in GB/T 44243-2024?
This method focuses on monitoring hydrogen samples from vehicle fuel cells to detect:
- Sulfur-containing compounds – including hydrogen sulfide and carbonyl disulfide
- Formaldehyde
- Organic halides – such as vinyl chloride
Key steps defined in GB/T 44243-2024 include:
- Sample collection using canisters
- Pre-concentration of trace volatile compounds using thermal desorption
- Analysis via GC–MS–SCD (gas chromatography–mass spectrometry with sulfur chemiluminescence detection)
Meeting the requirements of GB/T 44243-2024
Canister-based sampling and pre-concentration with thermal desorption allow for high-sensitivity detection of contaminants in hydrogen for PEM fuel cells.
The UNITY–CIA Advantage-xr thermal desorption system from Markes International fully meets the requirements of GB/T 44243-2024, and is supported by a full range of canisters, accessories and consumables.
Learn more about GB/T 44243-2024
- New national standard for hydrogen energy is promoted and implemented (Mandarin language)
- Analysis of hydrogen fuel impurities
- Webinar: Understanding and identifying hydrogen fuel impurities
- Application Note: Optimised hydrogen fuel impurity analysis – identification, measurement and characterisation of volatile organic compounds by TD–GC–MS/SCD
Source: GB/T 44243-2024, Air Quality – Determination of Hydrogen in Ambient Air, published by the Standardization Administration of China (SAC). View on ndls.org.cn ›
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Questions about GB/T 44243-2024?
Our team is here to provide expert advice on air monitoring, and guidance on method setup, system configuration, and troubleshooting for GB/T 44243-2024, to ensure compliance and data quality.
