基体分离-高分辨电感耦合等离子体质谱法测定硫化物矿石中的稀土元素和钇  

Determination of Y and rare earth elements in sulfide ore by high resolution inductively coupled plasma mass spectrometry( HR-ICP-MS) after matrix separation

作　　者：李华玲[1] 郑荣华[1] 沈加林[1] 

机构地区：[1]南京地质矿产研究所,南京210016

出　　处：《分析试验室》2014年第10期1139-1142,共4页Chinese Journal of Analysis Laboratory

基　　金：国家重大科学仪器开发专项应用方法开发项目(2011Y17006505)资助

摘　　要：采用Na2O2碱熔,经阳离子交换树脂分离富集,分离掉大量熔剂和基体,HR-ICP-MS上测定铅锌矿中的稀土元素。采用内标法消除基体影响,轻稀土元素采用低分辨率模式测定,重稀土元素采用高分辨率模式测定,有效地消除了测定过程中的基体干扰和轻稀土对重稀土的干扰。方法检出限为0.5-12.1ng/g,RSD在1.0%-4.6%之间。The samples are fused with Na2O2. After separation and enrichment of cation exchange resin, rare earth elements in sulfide ore are determined by HR-ICP-MS. Sensitivety drift are compensated by internal standard method. Light rare earth elements are determined by LR mode, heavy rare earth elements are determind by HR mode. Matrix interference and the interence of light rare earths on heavy reare earths are eliminated. The detection limits of the method are 0. 0005 ~0. 0121 μg/g, the precision are 1.0% -4.6%.

关 键 词：高分辨电感耦合等离子体质谱 硫化物矿石 稀土元素 过氧化钠碱熔 阳离子交换树脂 

分 类 号：O657.63[理学—分析化学]