食品科学 ›› 2005, Vol. 26 ›› Issue (12): 182-184.

• 分析检测 • 上一篇    下一篇

离子色谱法测定水果中阳离子Na+、NH4+、K+、Mg2+、Ca2+的含量

 刘玉芬, 夏海涛, 连桂香   

  1. 淮海工学院化学工程系,齐齐哈尔大学生命科学学院
  • 出版日期:2005-12-15 发布日期:2011-10-01

Cations Detemination of Na+,NH4+,K+,Mg2+,Ca2+ in Fruits by Ion Chromatography

 LIU  Yu-Fen, XIA  Hai-Tao, LIAN  Gui-Xiang   

  1. 1.Department of Chemical Engineering, Huaihai Institute of Technology; 2.Institute of Life Sciences, Qiqihaer University
  • Online:2005-12-15 Published:2011-10-01

摘要: 利用离子色谱法测定了五种水果(苹果、梨、橙子、菠萝、草莓)中的阳离子Na+、NH4+、K+、Mg2+、Ca2+,色谱柱为IonPACCS12A阳离子交换柱,淋洗液为硫酸,ECD-40电导检测器检测,外标法定量。分析结果表明,五种常见阳离子的线性关系良好,它们的检出限为0.01~0.1mg/L,回收率为93.2%~102.7%,相对标准偏差在0.72%~3.92%之间。该方法具有简单、快速、准确等优点,为检测其它食品中Na+、NH4+、K+、Mg2+、Ca2+的含量提供了一种有效的方法。

关键词: 水果, 阳离子, 离子色谱法

Abstract: The amount of Na+, NH4+, K+, Mg2+, Ca2+ in five kinds of fruit (apple, pear, orange, pineapple, strawberry) were respectively separated and detected by ion chromatography. The chromatographic column is an cation-exchange column (IonPac CS12A 4250mm i.d). Sulfuric acid is used as eluent and detector is ECD-40 electrical conductivity detector. The external standard method is used for quantification analysis. The analysis results indicated that the five kinds of common cations linear relationship was good, with detection limits 0.01~0.1mgL. The recovery rates were between 93.2% and 102.7%. The relative standard deviations were among 0.72% and 3.92%. This method was of advantages of being simple, fast, accurate and effective to determine the contents of Na+, NH4+, K+, Mg2+, Ca2+ in other foods .

Key words: fruits, cation, ion-chromatography