N_2O-C_2H_2火焰原子吸收光谱法测定纯镍中钴  

Determination of cobalt in pure nickel by N_2O-C_2H_2 flame atomic absorption spectrometry

作　　者：薛光荣[1] 夏敏勇 

机构地区：[1]中国航天科技集团公司空间电源研究所,上海200233 [2]上海安谱科学仪器有限公司分析测试中心,上海200030

出　　处：《冶金分析》2007年第11期69-71,共3页Metallurgical Analysis

摘　　要：提出了运用N2O—C2H2火焰原子吸收光谱法测定纯镍中钴含量的方法。进行了谱线、燃烧器高度、灯电流的选择，采用加入氧化镧、偏硼酸钠消除共存离子干扰。在优化的实验条件下，钴的浓度在0～30μg／mL范围内工作曲线呈良好的线性关系，检出限为0．04μg／mL。对样品中钴含量的分析，相对标准偏差均小于1．0％，平均回收率为97．4％。A method for the determination of cobalt in pure nickel by N2O-C2H2 flame atomic absorption spectrometry has been proposed. The optimal measurement conditions, such as analytical line, burner height, lamp current were chosen. The interference from the coexistence ions was eliminated by adding lanthanum oxide and sodium metaborate. Under the optimal exerimental conditions, the calibration curve is linear over the range of 0-30μg/mL for cobalt. The detection limit for cobalt is 0. 04μg/mL. The method has been applied in the determination of cobalt in pure nickel, with the relatioe standard deviation of below 1% and the average recovery of 97.4%.

关 键 词：N2O-C2H2火焰 原子吸收光谱法 纯镍 钴 测定 

分 类 号：O657.3[理学—分析化学]