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食品添加剂NaFeEDTA测定方法研究

作  者:
苗虹;于波;霍君生;卢承前
单  位:
中国预防医学科学院营养与食品卫生研究所
关键词:
NaFeEDTA;紫外分光光度法;酱油
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。
译  名:
Studies on Determination of Food Additive NaFe EDTA
作  者:
Miao Hong et.al.
关键词:
NaFeEDTA UV spectrometry Soy sauce
摘  要:
The research studied the possibility of determining the concentration of NaFeEDTA by UV spectrometry. We found that in some iron fortificants such as FeSO_4, FeClA_3, Fe(NO_3)_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.

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