食品科学 ›› 2000, Vol. 21 ›› Issue (8): 48-50.

• 分析检测 • 上一篇    下一篇

食品添加剂NaFeEDTA测定方法研究

苗虹, 于波, 霍君生, 卢承前   

  1. 中国预防医学科学院营养与食品卫生研究所
  • 出版日期:2000-08-15 发布日期:2011-12-01

Studies on Determination of Food Additive NaFe EDTA

 MIAO  Hong, YU  Bo, HUO  Jun-Sheng, LU  Cheng-Qian   

  • Online:2000-08-15 Published:2011-12-01

摘要: 根据NaFeEDTA在256nm处的强紫外吸收与浓度的线性关系,测定了酱油样品中的NaFeEDTA含量,同时做了样品测定的重现性及回收率等实验。结果表明,线性范围在0.4~4.0μg/ml(以NaFeEDTA中铁含量计)之间,相关系数为0.9999,样品中测定NaFeEDTA的回收率在95%~107%之间。此法简便,快速、准确,是测定强化食品中NaFeEDTA含量的行之有效的方法。

关键词: NaFeEDTA, 紫外分光光度法, 酱油

Abstract: The research studied the possibility of determining the concentration of NaFeEDTA by UV spectrometry. We found that in some iron fortificants such as FeSO4, FeClA3, Fe(NO3)3, only NaFeEDTA had UV absorption at 256nm and the absorption was directly proportional to the concentration level of NaFeEDTA over the range of 0.4-4.0 μ g/ml (NaFeDETA-Fe) whereas the correlation coefficient was 0.9999 .The method had been applied to the determination of NaFeEDTA in soy sauce. The recovery rate was 95%-107%.This method is simple, fast, and accurate and a good way to determine the concentration of iron in food fortificated with NaFeEDTA.

Key words: NaFeEDTA UV spectrometry Soy sauce