EGTA-EDTA直接滴定法测定水泥中的氧化镁

Determine MgO of the cement with the method of EGTA-EDTA direct titration

根据水泥的化学组成 ,利用EGTA与Ca2 + 、Mg2 + 配位能力相差较大的特性 ,提出了EGTA作为Ca2 + 的 掩蔽剂 ,EDTA直接滴定镁的方法并讨论了Fe3 + 、Al3 + 、Ti4 + 、Mu2 + 等离子的干扰及消除。

According to the cement's elemental composition and EGTA being different from Ca 2+ and Mg 2+ in matching capacity,the paper puts forward the method of EDTA directly titrating Mg with the Ca 2+ shelter and discusses the Fe 3+ ,Al 3+ ,Ti 4+ ,Mn 2+ ,etc.ions' disturbing and deleting.