镁铬质耐火材料的ICP-AES测定

DETERMINATION OF MAGNESIAN-CHROME EFRACTORY BY INDUCTIVELY COUPLED PLASMA-ATOMIC EMISSION SPECTROMETRY

采用高频熔样 ,电感耦合等离子体原子发射光谱 (ICP -AES)法实现了对镁铬质耐火材料中的镁、铬、钙、铁和铝同时分析。对影响其光谱测量的各种因素进行了较为详细的研究 ,确定了实验的最佳测定条件。结果表明 ,方法的检出限为 0 .0 2 6 - 0 .2 4 1μg/mL ,回收率为 94 .97% - 10 2 .72 % ,RSD小于 1.81%。该法准确、快速、简便 ,应用于镁铬质耐火材料的测定 。

It is reported in this paper that the high frequency fusion method decompose technique is used in the Inductively Coupled Plasma-Atomic Emission Spectrometry(ICP-AES) method determination of Mg,Cr,Fe and Al in Magnesian-chrome efractory.The various factors affecting spectrum intensity were examined in details.The optimum conditions for the determination is tested and dicussed.The limit of the method is 0.026-0.241μg/mL.The recycling rate ranks from 94.79% to 102.72%.RSD is less than 1.81%.This method is accurate,quick-acquired and convenient.It is used in the determination of Magnesian-chrome efractory with the result is satisfactory.