Home / Standards / GB/T 14949.6-2021 GB/T 14949.6-2021 Active Manganese ores—Determination of copper, lead and zinc content—Flame atomic absorption spectrometric method 锰矿石 铜、铅和锌含量的测定 火焰原子吸收光谱法 Standard Type GBT ICS 73.060.20 CCS D32 Status 现行 Issue Date 2021-10-11 Implementation 2022-05-01 Responsible Dept 中国钢铁工业协会 Drafting Unit N/A