火焰原子吸收法测定工业级碳酸锂中铅  

Determination of lead in industrial-grade lithium carbonate using flame atomic absorption spectrometry

作　　者：吴鉴[1,2,3] 张克宇[1,2,3] 龙萍[1,2,3] 姚耀春[1,2,3] 

机构地区：[1]真空冶金国家工程实验室,昆明650093 [2]云南省有色金属真空冶金重点实验室,昆明650093 [3]省部共建复杂有色金属资源清洁利用国家重点实验室,昆明650093

出　　处：《分析试验室》2015年第9期1007-1009,共3页Chinese Journal of Analysis Laboratory

基　　金：国家自然科学基金项目(51364021);云南省自然科学基金(2014FA025);教育部"创新团队发展计划"(IRT1250)资助

摘　　要：采用原子吸收分光光度计,测定工业级碳酸锂中Pb的含量,分别进行标准曲线法,标准加入法,基体匹配法的实验研究。在选定的仪器测定条件下,采用标准加入法和基体匹配法所测得的工业级碳酸锂中的Pb含量与标准曲线法所测得的结果相比较无显著性差异,线性相关系数均大于0.999,相对标准偏差在1.4%～1.9%之间,回收率在112.5%～114.2%之间。可直接采用标准曲线法进行工业级Li2CO3中Pb的测定。The content of lead in industrial-grade lithium carbonate was determined using flame atomic absorption spectrometry. The standard curve method, standard addition method and matrix matching method were adopted for the experiments respectively. Under the instrumental conditions , there is no apparent difference between standard curve method and the other two methods for the determination of Pb in industrial-grade lithium carbonate. All of the correlation coefficients were higher than 0. 999. The relative standard deviations were in the range of 1.4% to 1.9%, and the recoveries were between 112.5% and 114.2%. In conclusion, the content of Pb could be determined by standard curve method directly.

关 键 词：火焰原子吸收光谱法 铅 标准曲线法 

分 类 号：TQ013.2[化学工程]