Home / Standards / GB/T 45479-2025 GB/T 45479-2025 Active Manganese ores and concentrates—Determination of potassium oxide and sodium oxide content—Flame atomic emission spectrometric method 锰矿石与锰精矿 氧化钾、氧化钠含量的测定 火焰原子发射光谱法 Standard Type GBT ICS 73.060.20 CCS D32 Status 现行 Issue Date 2025-03-28 Implementation 2025-07-01 Responsible Dept 中国钢铁工业协会 Drafting Unit N/A