铁的自动电位滴定法测定

DETERMINATION OF IRON BY AUTO-POTENTIOMETRIC TITRATION

在硫酸介质中，Fe3+定量的为金属钢还原为Fe2+，再继续用氧化剂（K2Cr2O7或Ce（SO4）2等）标准溶液进行自动电位滴定，方法简便、快速，所得结果与经典方法吻合较好．本文对铁红粉、铁矿标样、磁铁矿标样等进行了对比测定，结果均较满意．

The Ferric iron (Fe3+ ) is quantitatively reduced first by metal copper in aH,SO. medium: 2Fe3+ +Cu = 2Fe2+ +Cu2+, then by the auto - potentimetric titration with anoxidizing agent (K2Cr2O7 or Ce (SO4 )2) standard1 solution. This method is simple,quick andaccu rate.