电池锌粉中微量铜铁含量的测定

Determination of trace quantity of copper and iron in zinc powder for battery

主要简述运用空气 乙炔火焰原子吸收光谱法进行电池锌粉中微量铜铁含量的测定。介绍了铜铁最佳测定条件及呈良好线性范围的浓度,并对样品的测定条件和干扰因素进行了综合考虑。该方法具有灵敏度高、重现性好、步骤简单、操作容易掌握等特点,同时对干扰及方法的准确度和精确度也作了研究。样品微量铜铁含量的分析测定其相对标准偏差均小于1.0%(分析数据n=10);标准加入回收率均在97.0%～103.0%(分析数据n=6范围内)。实验结果表明:运用空气 乙炔火焰原子吸收光谱法测定电池锌粉中微量铜铁含量,达到了实验室分析质量控制的要求,适用于电池锌粉中微量铜铁含量的控制分析。

Determination o f trace quantity of copper and iron in zinc powder for battery by means of airacetylene flame atomic absorbing spectral method was introduced. The optimum measuring conditions for cooper and iron and the concentration for pressenting a fine linear range were recommended while the measuring conditions and interference factors were considered. The method has advantages of high sensitivity, less interference and is good in selectivity and reappearance. All the relative standard deviations were less then 1.0% in ten sample measures, and the standard adding recovery was within the range of 97.0%～103.0%. The experimental results show that the determination of trace quantity of copper and iron in zinc powder for battery by means of airacetylene flame atomic absorbing spectral method meets the qualitycontrol requirement of laboratory analysis. 