摘要
麻黄碱在强碱性条件下与Cu2 + 形成络合物 ,并在滴汞电极上还原产生灵敏的极谱波。麻黄碱浓度为 1～5 0 μg/ml时 ,峰电流与浓度呈线性 ,检出限为 0 .5 μg/ml,加标回收率为 96.7%～ 113 .8% ,相对标准偏差RSD =3 .2 2 %～ 5 .3 9%。本法可用于麻黄制剂中麻黄碱含量的测定。极谱波性质实验的结果表明该极谱波为络合吸附波。
In alkaline condition the complex of ephedrine and Cu 2+ had a sensitive reduction wave on dropping mercury electrode. The peak current was proportional to the concentration of ephedrine in the range of 1～50μg/ml. The detection limit was 0.5μg/ml, recovery was in the range of 96.7%～113.8% and relative standard deviation was from 3.22% to 5.39%. The proposed method was applied to determination the content of ephedrine in some medical preparations with satisfaction. It was found that the property of polarographic wave was of complex absorption.
出处
《中国卫生检验杂志》
CAS
2003年第6期709-710,共2页
Chinese Journal of Health Laboratory Technology
