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See Chinese contents: GB/T 40395-2021 GB/T 40395-2021: Determination of ammonium in methanol for industrial use -- Ion chromatography
This document specifies the method for the determination of free ammonia and ammonium ions in methanol for industrial use by ion chromatography. This document applies to the determination of free ammonia and ammonium ions in methanol for industrial use. When the injection volume is 50 μL, the lower limit of determination is 0.01 mg/L.
