原子吸收分光光度法测定常通口服液中微量元素锰的含量

Determination of Microelement Manganese in Changtong Oral Liquid by Atomic Absorption Spectrometry

目的:建立以原子吸收分光光度法测定常通口服液中微量元素锰含量的方法.方法:光源为锰空心阴极灯,波长为279.5nm,灯电流为3.0mA,狭缝宽度为1.2nm,空气流量为5.0L/min,乙炔流量为1.0L/min.结果:锰检测浓度在0.5～2.5μg/ml范围内与吸收度呈良好线性关系(r=0.9 997),平均加样回收率为99.24%(RSD=2.06%,n=5).结论:本方法简便、快速、准确、灵敏度高、精密度好.

OBJECTIVE： To establish atomic absorption spectrometry for the assaying of the microelement manganese in Changtong oral liquid. METHODS： The light source was hollow-cathode lamp with wavelength at 279.5nm, the electric current of the light was 3.0mA, the slit-width was 1.2nm, the air flow rate was 5.0L/ min and the flow rate of acetylene was 1.0L/min. RESULTS： The calibration curves was in linear correlation with adsorption when the detection concentration range of manganese was 0.5～2.5μg/ml（r=0.9 997）, the average recovery was 99.24% （RSD=2.06%, n=5）. CONCLUSION： This method is simple, fast, accurate, sensitive and precise.