Home / Standards / GB/T 6730.9-2016 GB/T 6730.9-2016 Active Iron ores—Determination of silicon content—The silicomolybdic blue spectrophotometric method reduced by ammonium ferrous sulfate 铁矿石 硅含量的测定 硫酸亚铁铵还原-硅钼蓝分光光度法 Standard Type GBT ICS 73.060.10 CCS D31 Status 现行 Issue Date 2016-10-13 Implementation 2017-09-01 Responsible Dept 中国钢铁工业协会 Drafting Unit N/A