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 %.
出处
《理化检验（化学分册）》
CAS
CSCD
北大核心
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)
关键词
火焰原子吸收光谱法
高纯碳酸锂
杂质元素
Flame atomic absorption spectrometry（FAAS）
High purity lithium carbonate
Impurity-elements
