火焰原子吸收法测定铌精矿及炉渣中氧化钙  

Determination of CaO in Baotou Columbite and Steel Cinder with Flame Atomic Absorption Spectrometry

作　　者：李建强[1] 

机构地区：[1]北京科技大学应用科学学院,北京100083

出　　处：《北京科技大学学报》1997年第2期218-222,共5页Journal of University of Science and Technology Beijing

基　　金：冶金部重点科研课题

摘　　要：用火焰原子吸收法测定了包头铌精矿和冶金炉渣中氧化钙.选用盐酸介质，镧作释放剂，用EDTA＋三乙醇胺消除干扰.比较了酸溶及碱熔试样处理方法，测定了酸不溶残渣中氧化钙.试验结果为：回收率100％～102％，RS.D＜2％.The determination of CaO content in columbite and steel cinder with flame atomic absorption spectrometry is studied. EDTA+TEA is used to eliminate the interferences, in HCl media, with La as releaser.The methods of sample treatment and the CaO in remainder undissolved in acids have been conducted. The result of the determina-determination and recovery of CaO shows that the ho of recovery is 100% ～102 %, R.S.D<2 %.

关 键 词：氧化钙 铌精矿 炼铌 炉渣 火焰原子吸收法 

分 类 号：TF841.601[冶金工程—有色金属冶金]