食品科学 ›› 2006, Vol. 27 ›› Issue (12): 663-664.

• 分析检测 • 上一篇    下一篇

食盐中钙镁含量的测定

张丽萍,李伟辉,袁东,付大友,王蓉,李莉   

  1.  四川理工学院材料与化学工程系;
  • 出版日期:2006-12-15 发布日期:2011-11-23

Determination of Ca and Mg in Salt

 ZHANG  Li-Ping, LI  Wei-Hui, YUAN  Dong, FU  Da-You, WANG  Rong, LI  Li   

  1. Department of Material and Chemical Engineering, Sichuan University of Science and Engineering, Zigong 643000, China
  • Online:2006-12-15 Published:2011-11-23

摘要: 本文研究了火焰原子吸收法测定食盐中钙镁含量的方法。结果表明:在一定条件下,钙含量在0.0~20.0μg/ml,镁含量在0.0~2.4μg/ml范围内遵守朗伯比耳定律,方法的精密度(RSD)为2.0%~2.2%。与容量法做对比,方法的相对误差2.3%~4.4%。

关键词: 食盐, 钙,

Abstract: In this paper the Ca and Mg in salt were detected by flame atomic absorption spectrometry (FAAS). The results showed that Beer’s law is kept in the range of 0.0~20.0μg/ml of Ca(Ⅱ) and 0.0~2.4μg/ml of Mg(Ⅱ).The relative standard deviation (RSD) is 2.0%~2.2%. The relative error is 2.3%~4.4%.

Key words: salt, calcium, magnesium