ICP－AES连续测定三七花中的稀土元素

SIMULTANEOUS DETERMINATION OF RARE EARTH INSNQIFLOWEL BY ICP-AES

本文报导用ＩＣＰ－ＡＥＳ连续测定三七花中稀土元素的方法。样品处理采用干灰化法和目前较新的微波消化法，并进行了测定结果的比较，通过试液与离子交换柱的动态交换试验，确定用阳离子交换树脂对稀土元素进行分离富集后，用２ｍｏｌ／Ｌ的ＨＮＯ＿３洗脱基体元素，６～７ｍｏｌ／Ｌ的ＨＮＯ＿３洗脱稀土元素，回收率最为理想。将除去大量基体元素的试液上机测试取得了满意的结果。

This article reports on the consecutive determination of the Rare Earthelements in Sanqi Flowel by ICP-AES.The com parison is made between incineration ofthe sample and at present the latest microwave digestion, Through cross-experiment be-tween the solution and the cation exchange pole in activity. We decided to use cation ex-change resin to separate and concentrate the rare earth elements, dilute the basic elementswith 2 mol/ L of HNO_3 and dilute the rare earth elements with 6～7mol / L of HNO_3 andthe recovery ratio is very ideal. The sample after the removal of large quantity of basic ele-ments is tested and the result is satisfactory.