Home / Standards / GB/T 6730.55-2019 GB/T 6730.55-2019 Active Iron ores—Determination of tin content—Flame atomic absorption spectrometric method 铁矿石 锡含量的测定 火焰原子吸收光谱法 Standard Type GBT ICS 73.060.10 CCS D31 Status 现行 Issue Date 2019-03-25 Implementation 2020-02-01 Responsible Dept 中国钢铁工业协会 Drafting Unit N/A