火焰原子吸收光谱法测定高纯碳酸锂中多种杂质元素  

FAAS Method for Determination of Impurities in High Purity Lithium Carbonate

作　　者：戴志锋[1] 肖小玲[1] 李法强[2] 祝增虎[2] 马培华[2] 

机构地区：[1]中国科学院研究生院,北京100049 [2]中国科学院青海盐湖研究所,西宁810008

出　　处：《理化检验（化学分册）》2007年第9期744-746,共3页Physical Testing and Chemical Analysis(Part B:Chemical Analysis)

基　　金：国家科技攻关计划课题(2001BA602B-01)

摘　　要：采用火焰原子吸收光谱法测定了高纯碳酸锂中多种杂质元素(包括锌、钠、铅、钾、铁、钙及镁)的含量。结果表明:测定上述各元素的相对标准偏差(n=9)在1.9%～4.4%之间。各元素的工作曲线具有良好的线性关系,相关系数在0.9943至0.9998之间。用标准加入法做回收试验,测得平均回收率在98.3%至101.0%之间。FAAS method was applied to the determination of metal impurities（in eluding Zn,Na,Pb,K, Fe,Ca and Mg）in high purity lithium carbonate.As shown by experimental results,values of RSD＇s（n=9） obtained in the determination of the above mentioned impurity-elements,were in the range of 1.9%-4.4%. Working curves for these elements had fine linearity with correlation coefficient ranged from 0.994 3 to 0.999 8. Test for recovery was performed by standard addition method,giving results in the range of 98.3%-101.0 %.

关 键 词：火焰原子吸收光谱法 高纯碳酸锂 杂质元素 

分 类 号：O657.31[理学—分析化学]