食品科学 ›› 2013, Vol. 34 ›› Issue (4): 165-167.

• 分析检测 • 上一篇    下一篇

微波消解—电感耦合等离子体质谱法测定油茶籽油中的5种重金属元素

倪张林,汤富彬   

  1. 中国林科院亚热带林业研究所
  • 收稿日期:2011-11-21 修回日期:2013-01-05 出版日期:2013-02-25 发布日期:2013-01-29
  • 通讯作者: 汤富彬 E-mail:greentang@yahoo.cn
  • 基金资助:

    中央级公益性科研院所基本科研业务费专项资金

Determination of Five Heavy Metals in Tea-camellia Seed Oil by Microwave Digestion-ICP-MS

  • Received:2011-11-21 Revised:2013-01-05 Online:2013-02-25 Published:2013-01-29

摘要:

摘要:建立了微波消解—电感耦合等离子体质谱法测定油茶籽油中的Pb,Cd,Cr,Cu,As五种重金属元素的方法。在试验中,优化了微波消解条件和仪器测定条件,选择了同位素187Re,103Rh,45Sc作为内标元素来校正基体带来的干扰。方法的检出限在0.36-1.64μg/kg,加标回收率在84%—111%之间,精密度RSD在1.6%-7.6%(n=5)之间。采用该方法对茶叶标准样品(GBW10016)和苹果标准样品(GBW10019)进行验证,测定值均在保证值范围内。本方法具有快速、准确、可靠、灵敏度高。

关键词: 微波消解, ICP-MS, 油茶籽油, 重金属

Abstract:

Abstract: A method was studied for analysis of Pb,Cd,Cr,Cu and As in tea-camellia seed oil by using ICP-MS. The instrument parameter and microwave digestion condition were optimized and internal standard of 187Re,103Rh and 45Sc was selected to compensate the drift of analytical signals. The detection limits of these 5 elements were 0.36-1.64μg/kg. The addition standard recovery was 84%—111% ,and the RSD was 1.6%-7.6%(n=5) for 5 elements. The accuracy of the method was evaluated by the analysis of corresponding trace heavy metal elements in standard reference material (GBW10016 and GBW10019). The analytical method presented was characterized with rapidness, good precision, accuracy, low limits of detection.

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