摘要
本文报道了一种基于电感耦合等离子体质谱对锂同位素进行精确测定的方法。探究了调谐参数、样品成分和外部因素对锂同位素测定的影响,优化了锂同位素测试参数。采用国际锂同位素标准物质,评估了该测试体系的正确性、精确度和不确定性。该方法用于测定锂同位素(^(6)Li/^(7)Li),具有较低的锂消耗量(<5 ng),较高的锂同位素测定精密度(±0.87%)和低空白值(25 pg)。
This study proposed a method for the precise determination of lithium isotopes using inductively coupled plasma mass spectrometry.The influences of tuning parameters,sample composition and external factors on the determination of lithium isotope were investigated,and the measurement parameters of lithium isotope were optimized.The accuracy,precision,and uncertainty of the testing system were rigorously validated and assessed by international lithium isotope standards.The method demonstrated lower lithium consumption(<5 ng),higher lithium isotope testing precision(±0.87%),and a low blank value(25 pg)in lithium isotope(^(6)Li/^(7)Li)measurement.
作者
何鹏兵
谢琼华
王金玉
李明来
屈伟
王良士
HE Pengbing;XIE Qionghua;WANG Jinyu;LI Minglai;QU Wei;WANG Liangshi(School of Chemistry and Chemical Engineering,State Key Laboratory Incubation Base for Green Processing of Chemical Engineering,Shihezi University,Shihezi 832003,China;National Engineering Research Center for Environmentfriendly Metallurgy in Producing Premium Non-ferrous Metals,China GRINM Group Corporation Limited,Beijing 101407,China;Beijing Engineering Research Center of Strategic Nonferrous Metals Green Manufacturing Technology,GRINM Resources and Environment Tech.Co.,Ltd.,Beijing 101407,China)
出处
《分析试验室》
北大核心
2025年第5期696-704,共9页
Chinese Journal of Analysis Laboratory
基金
国家重点研发计划重点基础材料技术提升与产业化重点专项(2017YFB0305400)资助。
关键词
锂同位素
电感耦合等离子体质谱
质量偏差
基质效应
lithium isotope
inductively coupled plasma mass spectrometry
mass bias
matrix effect
作者简介
何鹏兵,男(1998-),硕士研究生。研究方向:稳定锂同位素的分离纯化,hpb1221@163.com;通信作者:王金玉,男(1990-),博士,副教授。研究方向:资源综合利用,wjy0993@126.com;通信作者:王良士,男(1982-),博士,正高级工程师。研究方向:稀有金属冶金,wls1657@163.com。
