火焰原子吸收光谱法测定复杂再生锌原料中的铅量

Determination of Lead Content in the Complex Secondary Zinc Raw Materials by Flame Atomic Absorption Spectrometry

采用碱熔法将复杂再生锌原料分解,于火焰原子吸收光谱仪283.3nm处测定铅的吸光度。主要讨论了坩埚的选择、熔样温度和时间、酸介质及酸度、共存元素的干扰。该方法操作简便、稳定性好、精密度高,回收率在98.7%~101.8%之间,适用于复杂再生锌原料中铅量的分析。

In this paper,we use alkali fusion method to decompose the complex secondary zinc raw materials,and determination of lead by flame atomic absorption spectrometer at 283. 3 nm. The choice of crucible,the temperature and time of melting sample,the interference of the acid medium and the interference of coexisting elements are discussed. This method is simple,stable,high precision,and the recovery rate is between 98. 7% and 101. 8%,and it is suitable for the analysis of lead content in the raw materials of complex secondary zinc.