酚藏花红——二苯胺磺酸钠双指示剂重铬酸钾容量法测定矿石中铁

DETERMINATION OF IRON IN ORE BY THE VOLUMETRY OF K_2Cr_2O_7 WITH DOUBLE-INDICATOR TECHNIQUE

本文研究了以酚藏花红为内指示剂,三氯化钛还原铁,以二苯胺磺酸钠为指示剂,重铬酸钾容量法测定矿石中铁。方法准确,稳定,操作简便并消除了汞对环境的污染。

Determination of iron in ore by the volumctry of sodium diphenylamine sulphonate and K2Cr2O7 using phenosafranine as internal indicator and Till3 as reducer of iran (III) was studied in the paper. The method without mercury was accurate,slable and simple.