【摘要】 提出了利用薄层树脂相通过光度法测定痕量铁的新方法。铁离子与硫氰酸钾形成红色络合物 ,将其富集在H+型 732 # 阳离子交换树脂上 ,通过制作成薄层直接测定。本法选择性好 ,精密度高 (RSD %=1 2 2 %～ 4 2 % ) ,回收率 97 4%～ 99% ,用于矿石中铁的测定 ,结果满意。更多还原

【Abstract】 A new method for the determination of trace iron with SCN - by thin layer resin phase photometry is reported in this paper. Iron(Ⅲ)reacts with KSCN to form a complex, which is accumulated on the thin layer cation exchange resin and determined by photometry. Photometric determination of iron in ore samples by this method with satisfactory selectivity and precision(RSD=1.22%-4.2%, recovery: 97.4%-99%).更多还原