食品科学 ›› 2011, Vol. 32 ›› Issue (12): 216-218.doi: 10.7506/spkx1002-6630-201112047

• 分析检测 • 上一篇    下一篇

微波消解–原子吸收光谱法测定不同马铃薯品种中的微量元素

卫学青,李 瑜*,吴安君   

  1. 河南农业大学食品科学技术学院
  • 出版日期:2011-06-25 发布日期:2011-06-10

Trace Elements Determination in Potatoes by Microwave Digestion and Atomic Absorption Spectrometry

WEI Xue-qing,LI Yu*,WU An-jun   

  1. College of Food Science and Technology, Henan Agricultural University, Zhengzhou 450002, China
  • Online:2011-06-25 Published:2011-06-10

摘要: 采用微波消解处理样品,以原子吸收光谱仪测定河南地区3个不同品种马铃薯中K、Mg、Ca、Fe、Cu微量元素的含量。结果表明:马铃薯中含有丰富的微量元素K、Mg、Ca、Fe、Cu,不同品种马铃薯之间微量元素含量有一定差异。分析结果的相对标准偏差为0.5%~4.96%,加标回收率为94.9%~102.2%,5种元素的检出限Mg为0.02μg/mL,其他均为0.20μg/mL。此方法测定马铃薯中微量元素,可靠、灵敏度高,选择性好,方法简便,且对环境污染小,适合常规分析。

关键词: 马铃薯, 微波消解, 原子吸收光谱法

Abstract: A method to determine the trace elements K, Mg, Ca, Fe and Cu in potato from three different cultivars grown in Henan region was proposed using microwave digestion and atomic absorption spectrometry. Three cultivars were all rich in K, Mg, Ca, Fe and Cu and varied in the contents of the trace elements. The relative standard deviations for determination of these elements ranged from 0.5% to 4.96%. The spike recovery rates from potato Zhongshu No.5 were from 94.9% to 102.2%. The limit of detection was 0.02μg/mL for Mg and 0.20μg/mL for the other four elements. This method can provide a reliable, sensitive, selective, simple and environmentally friendly approach for determination of trace elements in potato.

Key words: potato, microwave-digestion, atomic absorption spectrometry

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