电感耦合等离子体质谱法测定高纯氧化铒中14种稀土杂质  

Determination of Rare Earth Impurities in High Purity Erbium Oxide by Inductively Coupled Plasma -Mass Spectrometry

作　　者：刘晶磊[1] 章新泉[1] 童迎东[1] 

机构地区：[1]江西省分析测试中心,南昌330029

出　　处：《分析化学》1997年第12期1417-1419,共3页Chinese Journal of Analytical Chemistry

摘　　要：用电感耦合等离子体质谱（ＩＣＰ－ＭＳ）研究了直接测定９９．９９９％Ｅｒ２Ｏ３中１４个稀土杂质的含量．采用基体匹配法扣除Ｅｒ对Ｈｏ和Ｔｍ元素的基体峰背景干扰，选择同位素Ｅｒ１６２为内标，可显著提高测量精度和准确度。 Ｈｏ和Ｔｍ元素的测定下限分别为 ４．０ μｇ／ｇ和 １．２μｇ／ｇ，其余稀土元素的测定下限均＜０．２μｇ／ｇ；加标回收率 ９５％～１０５％；相对标准偏差为４．３％～１０．０％．Trace rare earth impurities in high purity Er2O3(99. 999%)were determined using ICP-MS with matrix matching and internal standard Er162. Interference from Er166, Er167, Er168 and Er170 on Ho165 and Tm169was overcome by means of matrix matching. Internal standard Er162 was used to increase the sensitivity and precision. The detection limits of 14 rare earth elements total up to 7 μg/L in solution. Recovery tests showed 95 %－105%,RSD was 4. 3%~10%.

关 键 词：氧化铒 ICP-MS 稀土杂质 高纯稀土 

分 类 号：O614.33[理学—无机化学]