摘要
研究了用六次甲基四胺－铜试剂分离干扰元素，络合滴定法测定Ｍｇ４０ＳｉＦｅ合金中的镁含量。取两份试液，一份于ｐＨ１２以钙指示剂为指示剂，ＥＤＴＡ滴定钙量，另一份于ｐＨ１０以铬黑Ｔ为指示剂，ＥＤＴＡ滴定钙、镁合量，由差减法求得镁量。其方法简便、快捷、准确，镁的回收率为９９．８％～１００．３％。
A method of determination of magnesium in Mg_4oSiFe alloy by complexometric titration after separet- ing other coexist ions with hexamine-cuprison has been reported. The recovery of the method amounts to 99. 8% ~ 100. 3%. The proposed method proved simple, convenient and accurate. It has been used for the determination of magnesium in the new nodularizer(Mg_4oSiFe alloy) with satisfactory results.
出处
《铁合金》
北大核心
2000年第3期37-39,共3页
Ferro-alloys
