Home / Standards / GB/T 6730.12-2016 GB/T 6730.12-2016 Active Iron ores—Determination of aluminum content—Chrome azurol S spectrophotometric method 铁矿石 铝含量的测定 铬天青S分光光度法 Standard Type GBT ICS 73.060.10 CCS D31 Status 现行 Issue Date 2016-12-13 Implementation 2017-09-01 Responsible Dept 中国钢铁工业协会 Drafting Unit N/A