摘要
目的:采用原子吸收光谱法,建立牛膝中多种金属元素的测定方法,对21批不同产地牛膝药材进行测定。方法:Fe、Mn、Ca、Mg、K、Zn、Cu等元素利用火焰光原子吸收分光光度法,Pb、As、Cd利用石墨炉原子吸收光度法,Hg利用氢化物-冷原子吸收法测定。结果:所有批次怀牛膝药材中重金属检测结果均符合国家标准有关规定;道地产区怀牛膝药材中含有较高的K、Mg、Cu和Mn,而非道地产区药材中则含有较高的Fe、Zn和有害金属元素Pb、Hg。结论:该方法简便、准确、重复性好,可为全面评价牛膝药材质量提供参考。
Objective： To establish an atomic absorption spectrometry method for determination of the contents of metal elements in Achyranthis Bidentatae Radix and analyze 21 batches of samples from different areas.Methods： Fe,Mn,Ca,Mg,K,Zn and Cu were detected by atomic absorption spectrometry with hydrogen flame detector,Pb,As and Cd were detected by graphite furnace atomic absorption,Hg was detected by cold atomic absorption.Results： The heavy metal contents met the requirement of Chinese Pharmacopoeia.The contents of K,Mg,Cu and Mn in the samples of geo-authentic areas were higher,while the contents of Fe,Zn,Hg and Pb in the samples of non-authentic areas were higher.Conclusion： This method is sample,accurate,repeatable and could be used to evaluate the quality of Achyranthis Bidentatae Radix.
出处
《中药材》
CAS
CSCD
北大核心
2011年第12期1837-1841,共5页
Journal of Chinese Medicinal Materials
基金
河南省科技厅重点科技攻关计划项目(编号:102102310018)
关键词
牛膝
金属元素
原子吸收光谱法
Achyranthes bidentata Bl.
Metal Elements
Atomic Absorption Spectrometry
