ICP-AES法测定铁矿石及炉渣中镧、铈、镨、钕、钐  

Determination of Lanthanum,Cerium,Praseodymium,Neodymium and Samarium in Iron Ore and Slags with Inductively Coupled Plasma-Atomic Emission Spectrometry(ICP-AES)

作　　者：段晓晨[1] 薛玉兰[1] 刘钢耀[1] Duan Xiao-chen;Xue Yu-lan;Liu Gang-yao(Technical Center of Inner Mongolia Baotou Steel Union Co.,Ltd.,Baotou 014010,Inner Mongolia Autonomous Region,China)

机构地区：[1]内蒙古包钢钢联股份有限公司技术中心,内蒙古包头014010

出　　处：《包钢科技》2023年第1期93-98,共6页Science & Technology of Baotou Steel

摘　　要：文章研究了铁矿石、炉渣的溶解方法,采用盐酸初步溶解再用碳酸钠-硼酸混合熔剂处理残渣的分解方法,通过试验对镧、铈、镨、钕、钐元素的分析谱线进行优化选择,确定了灵敏度高、干扰少的分析谱线作为分析谱线,采用等离子体发射光谱法同时测定镧、铈、镨、钕、钐五元素含量。结果表明,铁矿石、炉渣中镧、铈、镨、钕、钐元素的检出下限均为0.0050%,铁矿石中各稀土元素测定上限:La测定上限为5%,Ce测定上限为10%,Pr测定上限为1%,Nd测定上限为2%,Sm测定上限为1%;炉渣中各稀土元素测定上限均为0.500%。In this paper,the dissolution methods of iron ore and slags are studied.The decomposition method of preliminarily dissolving with hydrochloric acid followed by treating the residue with mixed flux of sodium carbonate-boric acid is applied.The analytical spectral lines with high sensitivity and fewer interferences are determined as analytical spectral lines through optimizing and selecting the analytical spectral lines of lanthanum,cerium,praseodymium,neodymium and samarium by experiments.Moreover,the contents of such five elements as lanthanum,cerium,praseodymium,neodymium and samarium are determined simultaneously with ICP-AES.The results showed that the lower detection limit of lanthanum,cerium,praseodymium,neodymium and samarium in iron ore and slags was 0.0050%,the upper detection limits of rare earth elements in iron ore were 5%for La,10%for Ce,1%for Pr,2%for Nd and 1%for Sm as well as all the upper detection limits of rare earth elements in slags were 0.500%.

关 键 词：ICP-AES 矿石 炉渣 稀土含量 

分 类 号：O657.31[理学—分析化学]