钢铁及合金化学分析方法 硫酸亚铁铵滴定法测定钒含量
Methods for chemical analysis of iron,steel and alloy--The ammonium ferrous sulfate titrationmethod for the determination of vanadium content
2000-04-11
GB/T 6730.9-2016
铁矿石 硅含量的测定 硫酸亚铁铵还原-硅钼蓝分光光度法
Iron ores—Determination of silicon content—The silicomolybdic blue spectrophotometric method reduced by ammonium ferrous sulfate