多接收电感耦合等离子体质谱法测量钐同位素丰度  

作　　者：周涛[1] 李金英[1] 赵永刚[1] 张继龙[1] 赵墨田[2] 王军[2] 逯海[2] 

机构地区：[1]中国原子能科学研究院放射化学研究所，北京102413 [2]国家标准物质研究中心，北京100013

出　　处：《质谱学报》2004年第B10期183-184,共2页Journal of Chinese Mass Spectrometry Society

摘　　要：Standard solutions of different samarium isotope abundance were prepared by blending high concentrated isotope of ^152Sm and ^154Sm, which were measured by multicollector inductively coupled plasma mass spectrometry(MC-ICPMS) to gain the correction factor. In order to achieve better accuracy, solution concentration, nebulizer gas flow rate, sampling position and collision gas flow rate have been researched. The same samples were determined using TIMS. The measurement results of two methods were compared and the corrected results of main isotopic ratios were almost accordant better than 0.03%. By correction of isotopic standards, the absolute measurement method of MC-ICPMS was established.

关 键 词：多接收电感耦合等离子体质谱 钐 同位素丰度 可溯源性 表面热电离质谱 

分 类 号：O614.337[理学—无机化学] O657.63[理学—化学]