食品科学 ›› 2007, Vol. 28 ›› Issue (3): 308-310.

• 分析检测 • 上一篇    下一篇

火焰原子吸收分光光度法快速测定饮料中的铜

 王晖, 郝莉花, 王龙霞   

  1. 河南省产品质量监督检验院; 河南省产品质量监督检验院 河南郑州450004; 河南郑州450004;
  • 出版日期:2007-03-15 发布日期:2011-12-31

Fast Determination of Copper in Beverage by Flame Atomic Absorption Spectrometry

 WANG  Hui, HAO  Li-Hua, WANG  Long-Xia   

  1. Henan Insititute of Products Quality Supervision and Inspection, Zhengzhou 450004, China
  • Online:2007-03-15 Published:2011-12-31

摘要: 本法采用火焰原子吸收法测定饮料中的铜含量,并在此基础上用硝酸稀释法处理样品,经过比较,发现该法样品前处理简便、快捷,克服了消化法繁琐、耗时以及直接进样法的易堵塞燃烧头、基线漂移等缺点,测定结果准确。该方法样品加标回收率为92%~103%,相对标准偏差为0.58%,检出限为0.015mg/L。

关键词: 火焰原子吸收分光光度法, 稀释法, 饮料,

Abstract: The copper concentration in beverage has been determined by the method of flame atomic absorption spectrometry and the pre-treatment of sample has been performed by the dilution method in this study. This method has produced not only satisfactory results, but also many advantages including easy pre-treatment of sample, convenience and base line drift. It has a good sample recovery rate of 93.0%~109%. Its relative standard deviation is from 0.808% to 2.62%, and the detection limit is 0.08%.

Key words: flame atomic absorption spectrometry, dilution method, beverage, copper