食品科学 ›› 2008, Vol. 29 ›› Issue (2): 347-349.

• 分析检测 • 上一篇    下一篇

离子色谱法测定水果和饮料中Na+、NH4+、K+、Mg2+、Ca2+、Zn2+的含量

 王宇昕, 于泓   

  1. 东北农业大学应用化学系; 哈尔滨师范大学化学系 黑龙江哈尔滨150030; 黑龙江哈尔滨150080;
  • 出版日期:2008-02-15 发布日期:2011-08-24

Determination of Na+、NH4+、K+、Mg2+、Ca2+、Zn2+in Fruits and Juice by Ion Chromatograph

 WANG  Yu-Xin, YU  Hong   

  1. 1.Department of Applied Chemistry, Northeast Agricultural University, Harbin 150030, China;2.Department of Chemistry, Harbin Normal University, Harbin 150080, China
  • Online:2008-02-15 Published:2011-08-24

摘要: 采用非抑制型离子色谱法测定了水果(苹果、梨)以及饮料(运动型饮料、绿茶、水蜜桃汁、胡萝卜汁和胡萝卜橙汁)中Na+、NH4+、K+、Mg2+、C 2+、Zn2+ 的含量,其中一价阳离子以吡啶-2,6-二羧酸为淋洗液测定,二价阳离子以吡啶-2,6-二羧酸+乙二胺+草酸为淋洗液测定。分析结果表明:几种离子的线性关系良好,检测限为0.011~0.195mg/L,相对标准偏差在0.125%~1.65%之间。该方法简单、快捷,结果准确、可靠。

关键词: 水果, 饮料, 离子色谱法, 阳离子

Abstract: The amount ofThe amount of Na+、NH4+、K+、Mg2+、Ca2+、Zn2+ in fruits (apple, pear) and juice (sports water, green tea , pear juice, carrot juice and carrot and orange juice) were respectively separated and detected by non-suppressed ion chromatography. And pyridine-2,6-dicarbexylic was used as mobile phase to separated monovalent cations and pyridine-2,6-dicarbexylic-ethylenedi-amine-oxalic acid was used as mobile phase to separated divalent cations. The analysis results showed that the common cations linear relationship was good, with detection limits 0.011~0.195 mg/L and the relative standard deviation among 0.125%~ 1.65%. This method was of advantages of simple, fast and the results were accurate and reliable.

Key words: fruits, juice, ion chromatography, cation