电感耦合等离子体质谱法测定核级海绵锆中钨  

ICP-MS Determination of W in Nuclear Grade Sponge Zirconium

作　　者：王鹏[1] 龙绍军[1] 廖志海[1] 乔洪波[1] 王占明[1] 赵峰[1] 宁伟 

机构地区：[1]中国核动力研究设计院反应堆燃料及材料重点实验室,成都610213

出　　处：《理化检验（化学分册）》2017年第11期1322-1324,共3页Physical Testing and Chemical Analysis(Part B:Chemical Analysis)

摘　　要：0.100 0g核级海绵锆样品用氢氟酸0.5mL,硝酸2mL于150℃左右溶解后,用水定容至100mL。采用电感耦合等离子体质谱法测定样品溶液中钨的含量。184 W为分析核素,以232 Th为内标物。钨的线性范围在100.0μg·L^(-1)以内,方法的检出限(3s)为0.003μg·L^(-1)。以2.00,50.00μg·L^(-1)浓度水平进行加标回收试验,回收率为91.5%,93.5%,测定值的相对标准偏差(n=6)为5.0%,2.4%。The sample（0.100 0 g）of nuclear grade sponge zirconium was dissolved with HF（0.5 mL）and HNO_3（2 mL）at temperature of 150 ℃ or so,and then was diluted to 100 mL with water.ICP-MS was applied to the determination of W in the sample solution.184 W was used as the analytical nuclide,232 Th was used as internal standard.Linearity range of W was found in the range within 100.0 μg· L^（-1） with detection limit（3 s）of 0.003μg·L^（-1）.Tests for recovery was made by standard addition method at the concentration levels of 2.00,50.00μg·L^（-1）,values of recovery found were 91.5%,93.5 %,with RSD′s（n=6）of 5.0%,2.4%.

关 键 词：电感耦合等离子体质谱法 海绵锆 钨 

分 类 号：O657.63[理学—分析化学]