有机共沉淀-石墨炉原子吸收光谱法测定高纯氧化镧、氧化钇中微量钴和镍  

Determination of Trace Cobalt,Nickel in High Purity Lanthanum Oxide,Yttrium Oxide With Organic Coprecipitation-Graphite Furnace Atomic Absorption Spectrometry

作　　者：罗淑梅[1] 王迎新 张华 胡道龙 

机构地区：[1]中国科学院长春应用化学研究所,长春130022 [2]长春冶金地质专科学校

出　　处：《分析化学》1991年第9期1043-1046,共4页Chinese Journal of Analytical Chemistry

摘　　要：本文系用吡咯啶二硫代氨基甲酸铵(APDC)在0.3mol/L硝酸介质中共沉淀、石墨炉原子吸收法测定了高纯氧化镧、氧化钇中微量钴和镍、对于钴和镍的相对标准偏差分别为1.9～3.0％和3.9～4.1％;回收率分别为100～103％和95～100％;检出限分别为9.6×10^-(10)g和9.9×10^-(10)g。The trace amounts of Co, Ni in high purity La_2O_3 and Y_2O_3 arc coprecipitated with ammonium pyrrolidine dithiocarbamate from 0.3 mol/L HNO_3 solution, the precipitated Co and Ni are determined by graphite furnace atomic absorption spectrometry. Relative standard deviation is 1.9～3.0% for Co and 3.9～4.1% for Ni, recovery is 100～103% for Co, and 95～100% for Ni, the detection limit is 9.6×10^-(1O)g for Co and 9.9×10^(-10)g for Ni, respectively.

关 键 词：氧化镧 氧化钇 钴 镍 测定 

分 类 号：O614.81[理学—无机化学]