地质样品中微-痕量稀土元素ICP-MS测定  

ICP-MS Analysis of Trace and Ultra-trace Rare Earth Elements in Geological Samples

作　　者：陈福强[1] 何光涛[1] 李其英[1] 

机构地区：[1]广东省物料实验检测中心,广东广州510080

出　　处：《广州化工》2011年第14期115-117,共3页GuangZhou Chemical Industry

摘　　要：采用HCl-HNO3-HF—H2SO4湿法溶解不同类型的地质样品，以0．5％H2SO4-0．5％HNO3为介质，^103Rh、^187Re为内标校正仪器漂移和降低基体效应，在ICP—MS中测定15个稀土元素，检出限低，各元素的DL在0．004～0．019μg／L之间；基体效应小，内标法和外标法无显著差异；标准样品结果与参考值吻合。同时适合少量或大批量样品的稀土元素分析。The method of analyzing rare earth elements by ICP- MS was dissolved with HCl- HNO3 -HF- H2SO4 in electric hot plate. Two internal standards of ^103Rh - ^187Re were selected to compensate the drift of analytical signals and correct matrix effects. The detection limit of each element was found to be 0.004 -0.019 μg/L. With an applicable dilution factor, the matrix effects were not observed. The results of analyzing standard materiel were satisfactory.

关 键 词：稀土元素 地质样品 ICP—MS 

分 类 号：O657.31[理学—分析化学]