食品科学

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微波消解-电感耦合等离子体发射光谱法测定大米中铜、锰、铁、锌、钙、镁、钾、钠8 种元素

叶 润1,刘芳竹1,刘 剑1,崔亚娟1,*,王 靖1,李 东1,王 竹2,门建华2,王国栋2   

  1. 1.北京市营养源研究所,北京 100069;2.中国疾病预防控制中心营养与食品安全所,北京 100050
  • 出版日期:2014-03-25 发布日期:2014-04-04
  • 通讯作者: 崔亚娟
  • 基金资助:

    卫生行业科研专项(201202012);北京市科技新星计划项目(2011059)

Determination of Contents of Cu, Mn, Fe, Zn, Ca, Mg, K and Na in Rice Using Microwave Digestion and Inductively Coupled Plasma-Optical Emission Spectrometry

YE Run1, LIU Fang-zhu1, LIU Jian1, CUI Ya-juan1,*, WANG Jing1, LI Dong1, WANG Zhu2, MEN Jian-hua2, WANG Guo-dong2   

  1. 1. Beijing Research Institute for Nutritional Resources, Beijing 100069, China;
    2. National Institute of Nutrition and Food Safety, Chinese Center for Disease Control and Prevention, Beijing 100050, China
  • Online:2014-03-25 Published:2014-04-04
  • Contact: CUI Ya-juan

摘要:

建立微波消解-电感耦合等离子体发射光谱法测定大米中铜、锰、铁、锌、钙、镁、钾、钠8 种元素的方法。样品经微波消解后,直接用电感耦合等离子体-发射光谱仪同时测定上述8 种元素。结果表明:此方法的检出限在0.9~12 μg/L之间,线性相关系数r≥0.999 65;加标回收率在96.7%~104.3%之间,相对标准偏差<5.0%;对小麦标准物进行测定,结果令人满意。

关键词: 微波消解, 电感耦合等离子体发射光谱, 微量元素, 大米

Abstract:

A method was established for the determination of copper, manganese, iron, zinc, potassium, sodium, magnesium
and calcium in rice by inductively coupled plasma-optical emission spectrometry (ICP-OES) after microwave digestion.
The detection limits of the method varied from 0.9 to 12 μg/L, with a linear correlation coefficient (r) ≥ 0.999 65, a relative
standard deviation (RSD) < 5.0%, and the spike recovery rates were in the range from 96.7% to 104.3%. Wheat reference
material was satisfactorily determined by the proposed method. Thus, this method is suitable for the determination of
nutrient elements in rice.

Key words: microwave digestion, inductively coupled plasma-optical emission spectrometry (ICP-OES), micro-elements, rice

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