GB/T 44242-2024 Hydrogen for proton exchange membrane fuel cell vehicles—Determination of inorganic halogenated compounds and formic acid—Ion chromatography method

Scope

This document describes the principle, reagents and materials, instruments and equipment, experimental steps, data processing, precision, quality assurance and control, and test reports for the determination of inorganic halides and formic acid in hydrogen used in proton exchange membrane fuel cell vehicles by ion chromatography. This document is applicable to the determination of inorganic halides and formic acid in hydrogen used in proton exchange membrane fuel cell vehicles. For the determination of inorganic halides and formic acid in hydrogen used for other purposes, please refer to this document for implementation. The measurement range of inorganic halides and formic acid in hydrogen is 0.025 μmol/mol to 0.5 μmol/mol, and the detection limits of hydrogen chloride, chlorine, hydrogen bromide, and formic acid components are 0.014 μmol/mol, 0.007 μmol/mol, 0.002 μmol/mol, and 0.001 μmol/mol, respectively. Note: In this document, inorganic halides refer to hydrogen chloride, chlorine, and hydrogen bromide that may exist in hydrogen.

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