摘要
建立了酒石酸．硝酸酸溶处理样品，在王水．酒石酸介质中，不必进行预分离，采用空气．乙炔火焰原子吸收分光光度法直接测定铅碲渣中的碲。研究了灯电流、乙炔流量、燃烧器高度、溶液介质条件及酸度等有关工作条件。碲浓度在l～16μg·ml^-1范围内与吸光度As有良好的线性关系，其回归方程为A=0．02075c＋0．00138，相关系数0．9999，特征浓度0．21μg·ml^-1，检出限O．09μg·ml^-1。本方法用于铅碲渣中碲的测定，回收率为98．0％～102．3％，相对标准偏差为0．4％～0．8％。
The method of determing tellurium in lead tellurium residue sample by flame atomic absorption spectrometry was established, and the condition of operation was tested. The method has a relativety high sensitivity and high precision, and its operation is simple and rapid. The pre-separation is not needed. In a medium of 5 % aqua regia ＋ 3% tartaric acid, the linear range is 1 - 16μg· ml^-1, the regression equation is A --0.02075c ＋ 0.00138, the linear relative coefficient R is 0. 9999, the characteristic concentration is 0.21μg·ml^-1/% and the detection limit of tellurium is 0.09μg·ml^-1. The method has been applied to the determination of tellurium in lead tellurium residue sample with recoveries in the range of 98.0% - 102.3% and relative standard deviation in the range of 0.4% -0.8%.
出处
《稀有金属》
EI
CAS
CSCD
北大核心
2006年第1期126-128,共3页
Chinese Journal of Rare Metals
基金
金川集团有限公司资助项目
关键词
铅碲渣
火焰原子吸收光度法
碲
lead tellurium residue
flame atomic absorption spectrometry
tellurium
