电感耦合等离子体质谱法测定土壤中可溶态稀土元素  

Determination of Soluble Rare Earth Elements in the Soil by Inductively Coupled Plasma Mass Spectrometry

作　　者：吴淑芳[1] 姜玉梅[2] 刘燕[2] 刘永林[2] 

机构地区：[1]南昌大学医学院,江西南昌330006 [2]江西省分析测试中心,江西南昌330029

出　　处：《南昌大学学报（理科版）》2007年第4期377-379,共3页Journal of Nanchang University(Natural Science)

摘　　要：采用电感耦合等离子体质谱法（简称ICP—MS）测定土壤中可溶态稀土元素。可溶态稀土中由于引入NaAc，使得主要基体元素Na、Mg、Ca对稀土元素的信号强度均表现出抑制效应。我们引入In内标元素可有效地抑制分析信号的动态飘移，比较了分离基体与直接测定两种方法，结果表明，两种方法可得到一致的结果。稀土元素的检出限为0．001～0．011ng／mL。标准加入回收率为93．2％～111．5％。不经分离可直接测定土壤中可溶态稀土元素。Inductively Coupled Plasma Mass Spectrometry （ ICP - MS） determined soluble rare earth elements in the soil, Since the introduction of NaAc soluble system, allowing major basic elements Na ^＋ , Ca^2＋ , Mg^2＋ to rare earth elements （REE） signal intensity they showed inhibitory effects . In the introduction we can effectively curb the internal standard element analysis of the dynamic signal drift, compare with the direct determination of the two methods of enrichment separation. The results show that the two methods get the same results. The detection limit of 0.001 0.011 ng/ml REE, Standard recoveries （93.2 - 111.5 ）%. Enrichment can be measured directly without separating soluble rare earth elements in the soil.

关 键 词：电感耦合等离子体质谱仪 土壤 可溶态稀土 直接测定 

分 类 号：O657.63[理学—分析化学]