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采用电感耦合等离子体-发射光谱法(ICP-OES)测定三叶青药材中12种微量元素。三叶青药材中含量丰富的微量元素,依次为Mg、Fe、Mn、Zn、Ba等,其中Cd、Pb和As含量极低或未检出。该方法的相对标准偏差为0.1%—3.5%,加标回收率为96.7%—103.0%,可为测定其他药材中的微量元素提供参考的方法和理论依据。
Determination of 12 trace elements in clover greens by inductively coupled plasma-optical emission spectrometry (ICP-OES). Clover leaf medicinal content of trace elements, followed by Mg, Fe, Mn, Zn, Ba, etc., of which Cd, Pb and As content is very low or not detected. The relative standard deviation of this method was 0.1% -3.5%, and the recoveries were 96.7% -103.0%. This method can provide a reference for the determination of trace elements in other medicinal materials.