ICP-AES法测定天青石中主次量元素的研究

Study on the Simultaneous Determination of the Major and Minor Elements of Celestite by In- ductively Coupled Plasma-Atomic Emission Spectrometry

采用偏硼酸锂熔样,电感耦合等离子体原子发射光谱(ICP-AES)法,对天青石样品实现了一次熔样,主次量元素同时分析。对影响其光谱测量的各种因素进行了较为详细的研究,研究了实验的最佳测定条件。结果表明,方法的检出限为0.0011-0.022lμg·ml-1,回收率为92.87％-106.37％,RSD小于3.89％。该法准确、快速、简便,应用于天青石样品中主次量元素的测定,结果满意。

It is reported in this paper that the lithium metaborate fusion method decompose technique is used in the Inductively Coupled Plasma-Atomic Emission Spectrometry(ICP-AES) method determination of the major and minor elements of celestite. The various factors affecting spectrum intensity were examined in details. The optimun conditions for the determination is tested and discussed. The limit of the method is 0. 0011 -0. 0221μg· ml-1. The recycling rate ranks form 92.74% to 106. 37%. RSD is less than 3. 89%. This method is accurate, quick-acquired and convenient. It is used in the determination of the major and minor elements of celestite with the result is satisfactory.