电感耦合等离子体质谱法测定铝钪合金中的稀土元素  

Determination of rare earth elements in Al-SC alloys by using inductively coupled plasma mass spectrometry

作　　者：余滔[1] 朱昌洛[1] 赵朝辉[1] 

机构地区：[1]中国地质科学院矿产综合利用研究所,成都610041

出　　处：《分析试验室》2015年第1期87-90,共4页Chinese Journal of Analysis Laboratory

摘　　要：通过酸溶快速分解铝钪合金，电感耦合等离子体质谱法（ICP-MS）测定铝钪合金中的La，Ce，Pr，Nd，Sm，Y，Eu，Gd，Tb，Dy，Ho，Er，Tm，Yb，Lu15种稀土元素。对样品的前处理方式，仪器的工作条件，内标浓度等条件进行了考察。以^103Rh，^185Re作为内标校正铝的基体效应，考察了稀土元素的质谱干扰。在优化条件下各个元素的方法检出限为0．01～0．07μg/g，通过加标回收试验测得15个元素的回收率为96％～124％，相对标准偏差为0．74％～7．5％。A method for the determination of La, Ce, Pr, Nd, Sm, Y, Eu, Gd, Tb, Dy, Ho, Er, Tm, Yb, Lu in aluminium-scandium alloys by using inductively coupled plasma mass spectrometry （ICP-MS） was proposed, ^103Rh and ^185Re were used as the internal standards to correct the effect and drifting of aluminum. The mass spectrometric interference of rare earth element was explored and the non-mass spectroscopic isotope was found and used for determination. The spike recoveries were 96% - 124%. The detection limits of method were 0.01 -0. 07 μg/g. The relative standard deviations （RSD,n =6） were 0. 74% -7.5%.

关 键 词：铝钪合金 稀土 电感耦合等离子体质谱 

分 类 号：O657.63[理学—分析化学]