中草药益母草中5种微量元素的含量测定

Determination of 5 Trace Elements Concent in Leenurus Heterophyllus Sweet

[目的]通过测定中草药益母草中5种微量元素含量,以期阐明益母草的作用机理及其鉴定提供依据。[方法]采用微波消解-火焰原子吸收光谱法测定益母草中5种微量元素Fe、Cu、Mn、Zn和Pb的含量。[结果]在各自的浓度范围内,各元素浓度与吸光度均呈良好的线性关系,相关系数R均大于0.999 1;益母草中Fe、Cu、Mn、Zn和Pb的含量分别为4.18、4.13、8.49、8.34和2.92μg/kg。[结论]该方法准确,可靠,可用于中草药益母草中5种微量元素的含量测定。

[Objective] The determination of trace elements in Leenurus Heterophyllus Sweet,to provide a basis to elucidate the action mechanism and identification of Leenurus Heterophyllus Sweet.[Method] 5 kinds of trace element Fe,Cu,Mn,Zn,Pb were determinated in Leenurus Heterophyllus Sweet by Microwave digestion treatment and flame atomic absorption spectrophotometry.[Result] Fe,Cu,Mn,Zn,Pb content in Leenurus Heterophyllus Sweet were 4.18 μg/kg,4.13 μg/kg,8.49 μg/kg,8.34 μg/kg,2.92 μg/kg,respectively.