ICP-AES法测定药用植物中22种元素
张健,范宝磊
贵州省地矿局103地质大队,湖北科技学院药学院
Determination of 22 Elements in Medicinal Plants By ICP-AES
张健,范宝磊
1. 103 Geological Party, Guizhou Bureau of Geology and Mineral Resources, Tongren 554300, China 2. Hubei University of Science and Technology, Xianning 437100, China
摘要:建立微波消解-电感耦合等离子发射光谱(ICP-AES)测定贵州梵净山特色药用植物中Ni,Cd,As,Co等22种元素含量的方法。以硝酸-过氧化氢(3∶1)为消解体系,样品经微波消解后,用ICP-AES法对厚朴皮与厚朴根、野生艾纳香和人工种植艾纳香中22种元素含量及其差异进行分析。仪器工作条件:RF功率为1.25 kW,等离子体气流量为15.1 L/min,辅助气流量为1.0 L/min,雾化器气体流量为0.6 L/min。各元素在检测范围内有良好的线性,线性相关系数为0.9867~0.9996,检出限在0.0012~0.0123μg/g之间;加标回收率在95.55%~102.4%之间,测定结果的相对标准偏差为0.8%~3.6%(n=5)。该方法快速、准确、可靠,可用于药用植物样品中的微量元素分析。
Abstract:A method for the determination of 22 elements content in medicinal plants of Fanjing Moutain in Guizhou province by inductively coupled plasma atomic emission spectrometer(ICP-AES) was developed. The samples were pretreated by using vacuum microwave digestion in HNO3-H2O2(3∶1) solution system, then 22 elements content in skin and root of magnolia, and the wild and artificial Blumea balsamifera were analyzed. The ICP-AES instrument conditions were as follows: RF power was 1.25 kW, the gas flow rate of plasma gas was 15.1 L/min, auxiliary air flow rate was 1.0 L/min, and atomizing gas flow rate was 0.6 L/min. The good linearity was obtained for 22 elements in detection range with linear correlation coefficients of 0.9867-0.9996. The detection limits were 0.0012-0.0123 μg/g. The additon recoveries ranged from 95.55% to 102.4%, and the relative standard deviations were 0.8%-3.6%(n=5). The method is rapid and accurate, which can be used to analyze trace elements in medicinal plants.
关键词:药用植物;微量元素;厚朴;艾纳香
Keywords:medicinal plant; trace element; magnolia; blumea
本文引用格式:
张健,范宝磊.ICP-AES法测定药用植物中22种元素[J].化学分析计量,2017,26(1):8-11.
.Determination of 22 Elements in Medicinal Plants By ICP-AES[J]. Chemical analysis and meterage,2017,26(1):8-11.
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