Home / Standards / GB/T 14949.2-2021 GB/T 14949.2-2021 Active Manganese ores—Determination of nickel content—Flame atomic absorption spectrometric method 锰矿石 镍含量的测定 火焰原子吸收光谱法 Standard Type GBT ICS 73.060.20 CCS D32 Status 现行 Issue Date 2021-08-20 Implementation 2022-03-01 Responsible Dept 中国钢铁工业协会 Drafting Unit N/A