矿物中药中12种微量元素的ICP-MS快速测定法

ICP-MS Rapid Determination of 12 Trace Elements in Mineralized Traditional Chinese Medicine

目的探讨矿物中药中12种微量元素的测定方法。方法以Bi、Sc、In、Y作内标，采用电感耦合等离子质谱法（ICP—MS）分别测定不同矿物中药汤剂中12种微量元素的含量。结果方法的线性范围宽，线性相关系数均〉0．999，测定12种元素的相对偏差（n=7）≤3．7％，各元素的加标回收率为91．1～107．1％。结论方法简单、快速、灵敏、准确，适用于矿物中药汤剂中12种微量元素同时测定。

[ Objective] To explore a method for the determination of 12 trace elements in mineralized traditional Chinese medicine. [ Methods ] Bi, Sc, In and Y were used as the internal standard ; inductively coupled plasma - mass spectrometry （ ICP - MS） was applied to determine the content of 12 trace elements in the mineralized traditional Chinese medicine. [ Results] This method had a wide linear range; the linear correlative coefficient for all the elements was higher than 0.999; RSD≤3.7% ; the average recovery rate was 91.1 ～ 107.1%. [ Conclusion] This method is simple, rapid, sensitive and accurate; it can be used for simultaneous determination of 12 trace elements in mineralized traditional Chinese medicine.