微波消解–电感耦合等离子体质谱法测定 铀合金中铌、钼、锆  

Determination of niobium,molybdenum and zirconium in uranium alloy by ICP-MS

作　　者：赵刚[1] 丁丁 Zhao Gang;Ding Ding(Research of Physical and Chemical Engineering of Nuclear Industry,Tianjin 300180,China)

机构地区：[1]核工业理化工程研究院,天津300180

出　　处：《化学分析计量》2021年第2期61-64,共4页Chemical Analysis And Meterage

摘　　要：建立微波消解–电感耦合等离子体质谱法测定铀合金中铌、钼、锆。铀铌钼锆合金样品经8 mL HNO(31+1)和2 mL HF微波消解并稀释处理后,利用电感耦合等离子体质谱法测定合金样品中铌、钼、锆含量,研究了铀浓度在0~30μg/L时对铌、钼、锆元素直接测定的影响。铌、钼、锆的质量浓度在各自的范围内与其质谱响应值线性关系良好,相关系数大于0.999。铌、钼、锆的加标回收率为96.10%~105.00%,测定结果的标准偏差为0.74%~2.71%(n=6)。该方法流程简单,无需分离基体元素,可实现铀合金中铌、钼、锆元素的快速测定。A method for the determination of niobium,molybdenum and zirconium in uranium alloy by microwave digestion inductively coupled plasma mass spectrometry was established.The contents of niobium,molybdenum and zirconium in alloy samples were determined by inductively coupled plasma mass spectrometry(ICP–MS)after microwave digestion with 8 mL HNO3(1+1)and 2 mL HF and dilution.The effect of uranium concentration in the range of 0–30μg/L on the direct determination of niobium,molybdenum and zirconium was studied.There were good linear relationships between the mass concentration of niobium,molybdenum and zirconium with MS response value,and the correlation coefficient was greater than 0.999.The recoveries of niobium,molybdenum and zirconium were 96.10%–105.00%,and the relative standard deviations of the determination results were 0.74%–2.71%(n=6).The method is simple and does not need to separate matrix elements,and it can realize the rapid determination of niobium,molybdenum and zirconium in uranium alloy.

关 键 词：铀合金 电感耦合等离子体质谱法 铌 钼 锆 

分 类 号：O657.6[理学—分析化学]