电感耦合等离子体发射光谱法测定锂辉矿中的主次痕量元素

Determination of Major, Minor and Trace Elements in Spodumenite by ICP-AES

建立了采用电感耦合等离子体发射光谱测定锂辉矿中主、次、痕量元素的方法。样品经酸溶和碱熔处理后，直接进行２０种元素的测定。其检出限在０．５～１４．６μｇ／ｇ。样品测定的ＲＳＤ（ｎ＝１１），其主量成分＜０．５％，痕量成分＜１０％。标准加入回收率为８７．２％～１１４．３％。

his article presents a new method for determining the major,minor and trace elements inspodumenite.The sample is pretreated with HF-HNO_3 or fused with Na_2O_2 at 600 ℃. Thedetermination of 20 elements is made with an ICP spectrometer. The detection limits of theelements are in the range 0.5～14.6 μg/g.The RSDs(n=11) are <0.5% and <10% for the major and the trace elements respectively,the recoveries being 87.2%～114.3%。