介绍了采用电感耦合等离子体质谱测定稀土镁球墨铸铁中的15种稀土元素含量的方法。敞口式容器及混合酸消解程序被用于铸铁样品的分解。在优化的实验条件下,方法的定量测定限为0.20~2.17 ng/g,标准加入回收率在93.2%~107.4%之间,相对标准偏差(n=5)小于12%。 A method for the determination of 15 rare earth elements in rare earth magnesium nodular cast iron by inductively coupled plasma mass spectrometry is introduced. Open container and mixed acid digestion procedures are used for the decomposition of cast iron samples. Under optimized experimental conditions, the limit of quantification was 0.20-2.17 ng / g. The standard recoveries were between 93.2% and 107.4%. The relative standard deviations (n ​​= 5) were less than 12%.