ICP-AES法测定Au-RE合金中的稀土元素

Determination of Rare Earth Elements in Gold—Rare Earth Alloys by ICP-AES

试样用王水溶解， 制成盐酸浓度为１０ ％ （ ψ） 的溶液后用ＩＣＰ－ ＡＥＳ 法直接测定Ａｕ－ ＲＥ 合金中０－０１ ％ ～１０ ％ 的ＲＥ， 测定结果的最大误差为９ ％ 。分离富集后测定可以降低相对分析下限。选择了合适的分析线， 研究了Ａｕ 及其他共存元素的干扰。方法准确、简便。

An ICP-AES method has been used to determine directly 0 01%～10% rare earth elements in gold-rare earth alloys after the sample was dissloved in aqua regia,then transtormed a 10%HCl(ψ)solution.The maximum deviation of analysing results was 9%.After separation and concentration,the relative analysis lower limit could be lowered.The optimum analysing bands have been selected,and interference from gold and other coexisting elements investigated.The method was accurate,simple and quick.