Home / Standards / GB/T 6730.82-2020 GB/T 6730.82-2020 Active Iron ores—Determination of barium content—EDTA titrimetric method 铁矿石 钡含量的测定 EDTA滴定法 Standard Type GBT ICS 73.060.10 CCS D31 Status 现行 Issue Date 2020-06-02 Implementation 2021-01-01 Responsible Dept 中国钢铁工业协会 Drafting Unit N/A