Home / Standards / GB/T 14949.7-2024 GB/T 14949.7-2024 Active Manganese ores—Determination of sodium and potassium content—Flame atomic absorption spectrometric method 锰矿石 钠和钾含量的测定 火焰原子吸收光谱法 Standard Type GBT ICS 73.060.20 CCS D 32 Status 现行 Issue Date 2024-04-25 Implementation 2024-11-01 Responsible Dept 中国钢铁工业协会 Drafting Unit N/A