Home / Standards / GB/T 40395-2021 GB/T 40395-2021 Active Determination of ammonium in methanol for industrial use—Ion chromatography 工业用甲醇中铵离子的测定 离子色谱法 Standard Type GBT ICS 71.080.60 CCS G16 Status 现行 Issue Date 2021-08-20 Implementation 2022-03-01 Responsible Dept 中国石油和化学工业联合会 Drafting Unit N/A