微波消解-火焰原子吸收分光光度法测定复方肝浸膏片中铁的含量

Determination of iron in compound heparextractum tablets by atomic absorption spectrometry with microwave digestion

中文关键词:  火焰原子吸收分光光度法  复方肝浸膏片  铁含量

英文关键词:flame atomic absorption spectrometry  compound heparextractum tablets  iron content

中文摘要:

      目的 建立微波消解-火焰原子吸收分光光度法测定复方肝浸膏片中铁含量的方法。方法 火焰类型选择空气-乙炔, 测定波长为248.3 nm, 狭缝1.8 nm, 灯电流35 mA, 乙炔流量为2.5 L/min, 空气流量 10 L/min。结果 铁在0~6 μg/mL范围内与吸光度呈良好的线性, 线性相关系数r为0.9988, 平均回收率为100.7%, 测定结果的相对标准偏差均小于5.0%。结论 该方法重复性好, 稳定性好, 准确度高, 适用于复方肝浸膏片中铁的含量测定。

英文摘要:

      Objective To establish a method for determination of iron in compound heparextractum tablets by atomic absorption spectrometry with microwave digestion. Methods Air-acetylene was selected as flame type, measurement wavelength was 248.3 nm, slit was 1.8 nm, lamp current was 35 mA, acetylene flow was 2.5 L/min and air flow was 10 L/min. Results The iron had a good linearity with absorbance in the range of 0?6 μg/mL, the linear correlation coefficientr was 0.9988, the average recovery was 100.7%, and the relative standard deviation of the determination results were less than 5.0%. Conclusion The method has good repeatability, good stability and high accuracy, which is suitable for the determination of iron content in heparextractum tablets.