食品科学

• 分析检测 • 上一篇    下一篇

不完全消化-微乳液进样-HR-CS GFAAS测定休闲食品中5 种金属元素

刘全德1,2,陈尚龙1,2,张建萍1,2,李同祥1,2,刘 辉1,2,刘 益1   

  1. 1.徐州工程学院食品(生物)工程学院,江苏 徐州 221111;
    2.徐州工程学院 江苏省食品资源开发与质量安全重点建设实验室,江苏 徐州 221111
  • 出版日期:2014-12-25 发布日期:2014-12-29
  • 基金资助:

    江苏省食品资源开发与质量安全重点建设实验室资助项目(SPKF201317);国家自然科学基金面上项目(31270577);
    江苏省省级科技创新与成果转化(重大科技支撑与自主创新)专项引导资金项目(BE2011644);
    江苏省高校自然科学研究项目(12KJB550002)

Determination of Five Metal Elements in Leisure Foods by Incomplete Digestion-Microemulsion Sampling-High Rolution-Continuum Source Graphite Furnace Atomic Absorption Spectrometry

LIU Quan-de1,2, CHEN Shang-long1,2, ZHANG Jian-ping1,2, LI Tong-xiang1,2, LIU Hui1,2, LIU Yi1   

  1. 1. College of Food (Biological) Engineering, Xuzhou Institute of Technology, Xuzhou 221111, China; 2. Jiangsu Key Construction
    Laboratory of Food Resources Development and Quality Safe, Xuzhou Institute of Technology, Xuzhou 221111, China
  • Online:2014-12-25 Published:2014-12-29

摘要:

建立不完全消化-微乳液进样-高分辨-连续光源石墨炉原子吸收光谱法测定休闲食品中Cu、Al、Cr、Cd和Pb的方法。以不完全消化作为样品的前处理方式,正丁醇作为助乳化剂,研究微乳液的形成条件,系统地分析基体改进剂及其添加体积、灰化温度和原子化温度对吸光度和吸收峰峰形的影响,通过单因素试验确定Cu、Al、Cr、Cd和Pb的最佳测定条件。将本法所测得的结果与微波消解作为前处理方式所测得的结果进行比较,两者相近,本法的加标回收率为96.4%~105.6%。该方法快速、准确、稳定,具有较高的实用价值,为休闲食品中多元素检测提供了科学依据。

关键词: 不完全消化, 微乳液, 高分辨-连续光源石墨炉原子吸收光谱法, 休闲食品, 金属元素

Abstract:

A fast and effective method was developed for the determination of Cu, Al, Cr, Cd and Pb in leisure foods
by incomplete digestion-microemulsion sampling-high resolution-continuum source graphite furnace atomic absorption
spectrometry. The samples were digested by incomplete digestion and the conditions for forming microemulsion were
studied using N-butyl alcohol as an auxiliary emulsifier. The effects of matrix modifier, modifier volume, ashing temperature
and atomizing temperature on absorbance and absorption peak were investigated. The optimum parameters for determining
Cu, Al, Cr, Cd and Pb were chosen, respectively. The results showed a good agreement with the results obtained by the
conventional method, using incompletely digested and microwave digested samples. The recoveries for spiked samples
ranged from 96.4% to 105.6%. Therefore, the proposed method is rapid, accurate and stable with a high practical value. It
may provide a scientific basis for multi-element determination of leisure foods.

Key words: incomplete digestion, microemulsion, high resolution-continuum source graphite furnace atomic absorptionspectrophotometry (HR-CS GFAAS), leisure food, metal element

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