ICP-AES法测定盐岩中的微量元素

向pH值为 9的盐岩溶液中加入毫克量的铁为捕集剂 ,对 10 -9级的微量元素锌、铅、钴等十几种元素进行沉淀分离 ,有效地消除了ICP -AES法测定过程中大量的碱金属和碱土金属等离子的干扰 ,用干扰校正法校正铁和镁的影响 ,测定盐岩中的微量元素取得了较好的效果。经用标准回收法验证 ,对该方法测定结果的精密度和准确度满意。

DETERMINATION OF MICROELEMENTS IN SALT ROCK USING AN ICP-AES METHOD

While adding Fe in value of milligrams as a catching agent to a solution of salt rock at pH=9, tens of its microelements including Zn, Pb, Co and the like, in spite of contents in 10-9, can be efficiently separated, thereby eliminating their interfering with the determination using an ICP-AES method. Better results have been made in determinating the microelemints of the salt rock through correcting the interference of Fe and Mg. The ICP-AES method, according to its standard catching , is verified as having satisfactory precision and accuracy.