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本文采用H_2还原后HAc-Na_2SO_3除铁,用HCl-NaF-(NH_2)_3SO_4作溶样试剂,采用全铁减去HAc-Na_2SO_3除铁量得到残余亚铁量对Ti~(3+)进行校正的重铬酸钾法测低价钛。对如何消除溶样时Ti~(4+)+Ti~(2+)→2Ti~(3+)副反应作了有益探讨。该分析方法对不含三价铁及同时含三种状态铁的样品皆能适用。
In this paper, HAc-Na_2SO_3 was removed by H_2 reduction, and the amount of residual ferrous iron was removed by using total-iron minus HAc-Na_2SO_3 with HCl-NaF- (NH_2) _3SO_4 as the reagent to correct Ti 3+ The dichromate method of measuring low-cost titanium. The beneficial effects of Ti ~ (4 +) + Ti ~ (2+) → 2Ti ~ (3 +) side reactions on the dissolution were investigated. This method is suitable for samples that do not contain ferric iron and that contain both three states of iron.