冷原子吸收光谱法测定常通口服液中重金属汞的含量

Determination of Heavy Metal Element of Mercuric in Changtong Oral Liquid by Cold Atomic Absorption Spectrometry

目的:测定中药常通口服液中重金属汞(Hg)的含量。方法:冷原子吸收光谱法。结果:重金属Hg在4～20ng/mL浓度范围内线性关系良好(r=0.99926),平均回收率为98.38%(n=5),RSD为2.41%。常通口服液中重金属Hg的含量符合规定。结论:冷原子吸收光谱法简单、快捷、灵敏。

Objective:To determine the content of the heavy metal element of Hg in Changtong oral liquid.Methods:Cold atomic absorption spectrometry was used.Results:The calibration curves was linear in the range of 4～20 ng/mL for the heavy metal element of Hg (r=0.999 26).The average recovery of the heavy metal element of Hg was 98.38%(n=5,RSD=2.41%).Conclusion:This method is simple,quick and sensitive.