目的测定煤矸石中主要金属元素的含量。方法对样品进行湿法消解,采用乙炔火焰原子吸收光谱法对样品溶液中的铁,铅2种无机元素进行直接定量分析测定。结果铁检测浓度在50～250μg/ml范围内与吸光度呈良好线性关系(r=0.99121),平均加样回收率为99.16%(RSD=2.28%,n=5)。铅检测浓度在5～25μg/ml范围内与吸光度呈良好线性关系(r=0.84590),平均加样回收率为99.24%(RSD=2.06%,n=5)。结论此方法简便、快速、准确、灵敏度高、精密度好。 Objective To determine the content of major metal elements in coal gangue. Methods The samples were digested by wet method. The contents of iron and lead in the sample solution were determined by direct quantitative analysis with acetylene flame atomic absorption spectrometry. Results The iron concentration in the range of 50 ~ 250μg / ml showed a good linear relationship with the absorbance (r = 0.99121). The average recovery was 99.16% (RSD = 2.28%, n = 5). The concentration of lead in the range of 5 ~ 25μg / ml and absorbance showed a good linear relationship (r = 0.84590), the average recovery was 99.24% (RSD = 2.06%, n = 5). Conclusion This method is simple, rapid, accurate, sensitive and precise.