大理大学学报 ›› 2021, Vol. 6 ›› Issue (12): 51-54.

• 化学 • 上一篇    下一篇

ICP-OES测定叉唇石斛茎部10种微量元素的含量

  

  1. 大理大学药学院,云南大理 671000
  • 收稿日期:2021-04-06 出版日期:2021-12-15 发布日期:2022-01-14
  • 通讯作者: 杨明惠,教授,博士,E-mail: yangmh567@126.com。
  • 作者简介:苏艳梅,硕士研究生,主要从事临床药学研究。
  • 基金资助:
    国家自然科学基金项目(81160393);云南省教育厅科学研究基金项目(2020Y0554);大理大学创新团队项目(ZKLX2019216)

Determination of 10 Trace Elements in Stems of Dendrobium stuposum by ICP-OES

  1. College of Pharmacy, Dali University, Dali, Yunnan 671000, China

  • Received:2021-04-06 Online:2021-12-15 Published:2022-01-14

摘要: 叉唇石斛茎的粉末经硝酸微波消解后,采用电感耦合等离子体发射光谱法(ICP-OES)测定。通过方法学考察,结果显示10种微量元素(Fe、Al、Mn、Zn、Cr、Cu、Ni、Co、Cd和Pb)的相关系数(r)为0.999 7~0.999 9,检测限(LOD)为0.03~7.36 ng/L,定量限(LOQ)为0.11~24.52 ng/L,精密度的RSD值均小于2.68%,加标回收率为92%~104%。本实验建立的方法可用于同时测定叉唇石斛茎部中10种微量元素的含量。

关键词: 叉唇石斛, 微量元素, 电感耦合等离子体发射光谱法

Abstract:

The powders of stems from Dendrobium stuposum were digested by microwave with nitric acid and determined by inductively coupled plasma opitcal emission spectrometryICP-OES.  Through methodological examination, the results showed that the correiation coefficientsr of 10 target elementsFe Al Mn Zn Cr Cu Ni Co Cd and Pb were 0.999 7-0.999 9. The limit of detection LOD and the limit of quantitation LOQ were 0.03-7.36 ng/L and 0.11-24.52 ng/L respectively. The relative standard deviation RSD values of precision were lower than 2.68%. The average recoveries ranged from 92% to 104%. The developed method can be used to simultaneously determine the contents of 10 trace elements in stems of D. stuposum.

Key words:  , Dendrobium stuposum, trace elements, ICP-OES

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