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248.3nm,狭缝1.8nm,灯电流35mA,乙炔流量为2.5L/min,空气流量10L/min。结果铁在0~6μg/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。
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 0–6μg/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.
作者
王永姣
李卓
张亚锋
陶奕亦
李尔春
孙晓
饶雅琨
王涛
李荣
WANG Yong-Jiao;LI Zhuo;ZHANG Ya-Feng;TAO Yi-Yi;LI Er-Chun;SUN Xiao;RAO Ya-Kun;WANG Tao;LI Rong(Xi’an Institute for Food and Drug Control,Xi’an 710054,China)
出处
《食品安全质量检测学报》
CAS
2019年第18期6261-6265,共5页
Journal of Food Safety and Quality
基金
陕西省科技厅重点研发计划项目(2017SF-311)~~
关键词
火焰原子吸收分光光度法
复方肝浸膏片
铁含量
flame atomic absorption spectrometry
compound heparextractum tablets
iron content
