食品科学 ›› 2009, Vol. 30 ›› Issue (12): 144-146.doi: 10.7506/spkx1002-6630-200912028

• 分析检测 • 上一篇    下一篇

枣中微量硒的原子荧光光谱法分析

张福维,侯冬岩,回瑞华   

  1. 鞍山师范学院化学系
  • 收稿日期:2008-09-16 修回日期:2009-01-08 出版日期:2009-06-15 发布日期:2010-12-29
  • 通讯作者: 张福维 E-mail:fuweizhang-2005@163.com
  • 基金资助:

    辽宁省教育厅科学技术基金项目(20331079)

Atomic Fluorescence Spectrometric Determination of Trace Selenium in Chinese Date

ZHANG Fu-wei,HOU Dong-yan,HUI Rui-hua   

  1. (Department of Chemistry, Anshan Normal University, Anshan 114007, China)
  • Received:2008-09-16 Revised:2009-01-08 Online:2009-06-15 Published:2010-12-29
  • Contact: ZHANG Fu-wei, E-mail:fuweizhang-2005@163.com

摘要:

采用原子荧光光谱法对枣中硒的含量进行分析,确定最佳测定条件。结果表明:硒的检出限为0.57ng/ml,线性范围为1.0~32.0ng/ml,回收率为99.0%~106.3%,变异系数小于1.71%。

关键词: 枣, 硒, 原子荧光法

Abstract:

An atomic fluorescence spectrometric method was developed to determine trace selenium in Chinese date by taking 10% HCl solution as the current-carrying solution, selecting 2.0% potassium borohydride solution to enhance fluorescence intensity, and eliminating the disturbance of Pb2+, Cu2+ and Ag+ by enrichment with mercapto cotton and masking with thioureaascorbic acid. Results showed that the linear range and detection limit were 1.0-32.0 ng/ml and 0.57 ng/ml, respectively; the recovery varied from 99.0% to 106.3% and the RSD was lower than 1.71%.

Key words: Chinese date, selenium, atomic fluorescence spectrometry

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