食品科学 ›› 2013, Vol. 34 ›› Issue (10): 286-288.doi: 10.7506/spkx1002-6630-201310063

• 分析检测 • 上一篇    下一篇

微波消解-氢化物发生原子吸收法测定食品和调味品中微量砷

冯 波,田 娟,焦义丛,刘永刚   

  1. 梅花生物科技集团股份有限公司分析测试中心,河北 廊坊 065001
  • 收稿日期:2012-03-30 修回日期:2013-04-07 出版日期:2013-05-25 发布日期:2013-05-07
  • 通讯作者: 冯波 E-mail:feng2005080@sina.com

Determination of Trace Arsenic in Food and Flavor by Microwave Digestion-Hydride Generation Atomic Absorption Spectrometry

FENG Bo,TIAN Juan,JIAO Yi-cong,LIU Yong-gang   

  1. Analysis Test Center, Meihua Holding Group Co. Ltd., Langfang 065001, China
  • Received:2012-03-30 Revised:2013-04-07 Online:2013-05-25 Published:2013-05-07

摘要:

建立一种微波消解-氢化物发生原子吸收法直接测定总砷的方法。采用微波消解前处理,使用氢化物发生原子吸收法加以测定。本方法测定值与标准物质菠菜(GBW 10015)参考值比较,Z<|2|,结果满意。砷的检出限(3σ)为0.17μg/L,回收率为91.9%~111.0%,相对标准偏差(n=3)为0.1%~6.6%。本方法具有准确、灵敏度高等特点,可用于食品和调味品中总砷的分析。

关键词: 微波消解, 氢化物发生, 原子吸收,

Abstract:

A method for direct determination of total As was established by using microwave digestion-hydride generation
atomic absorption spectrometry (MD-HGAAS). Samoles were pretreatted by microwave digestion prior to MD-HGAAS
analysis. Satisfactory results (Z<|2|) were obtained when using spinach standard material (GBW 10015) to verify the
validity of the proposed method. The detection limit (3σ) of this method was 0.17 μg/L. Aaverage recovery rates for different
matrices spiked with As was 91.9%–111.0%, with relative standard deviation (RSD) was 0.1%–6.6%. The method presented
in this study can provide an accurate and sensitive approach to analyzing total As in food and flavor.

Key words: microwave digestion, hydride generation, atomic absorption spectrometry, arsenic

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