食品科学 ›› 2009, Vol. 30 ›› Issue (8): 187-189.doi: 10.7506/spkx1002-6630-200908038

• 分析检测 • 上一篇    下一篇

微波消解-ICP-AES法测定荞麦、燕麦、大麦中多种微量元素

吕琳琳,罗维巍,张咏梅   

  1. 鞍山师范学院化学系
  • 收稿日期:2008-06-23 修回日期:2008-12-06 出版日期:2009-04-15 发布日期:2010-12-29
  • 通讯作者: 吕琳琳 E-mail:linlinqq310@126.com
  • 基金资助:

    辽宁省鞍山市科技局基金项目(2007SF27);鞍山师范学院青年教师科研基金项目

Determination of Trace Elements in Buckwheat, Oat and Barley by ICP-AES Method

LU Lin-lin LUO Wei-wei ZHANG Yong-mei   

  1. (Department of Chemistry, Anshan Normal University, Anshan 114007, China)
  • Received:2008-06-23 Revised:2008-12-06 Online:2009-04-15 Published:2010-12-29
  • Contact: LU Lin-lin E-mail:linlinqq310@126.com

摘要:

本实验研究了用微波消解-ICP-AES对荞麦、燕麦、大麦中Cu、Zn、Fe、Mn、Na、Ca六种元素进行测定的方法。优化了ICP-AES的工作参数,研究了消解液的种类及用量对测定结果的影响。选择消解液为HNO3:HClO4=10:3(V/V),六种元素的检出限为0.005~0.021μg/ml,相对标准偏差均小于8%,回收率为95.6%~103.9%。该方法可用于荞麦、燕麦、大麦中多种微量元素的测定。

关键词: 荞麦, 燕麦, 大麦, 微波消解, ICP-AES, 微量元素

Abstract:

In the present study, a method for determining the contents of copper, zinc, iron, manganese, calcium and sodium in buckwheat, oat and barley by ICP-AES coupled with microwave digestion was developed. The operating parameters of ICP-AES were optimized and the effects of kinds and dosages of digestion solution on the determination results were investigated. Finally, a mixture digestion solution of HNO3 and HClO4 (10:3, V/V) was chosen. The detection limits of these six elements were between 0.005 μg/ml and 0.021 μg/ml, all the relative standard deviations (RSD) are less than 8%, and the recovery is 95.6% to 103.9%. In conclusion, this method can be used to determine trace elements in buckwheat,oat and barley with satisfactory results.

Key words: buckwheat, oat, barley, microwave digestion, ICP-AES, trace elements

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