高等学校化学学报 ›› 1990, Vol. 11 ›› Issue (2): 136.

• 研究论文 • 上一篇    下一篇

以meso四-(对磺基苯)卟啉为柱后衍生剂同时测定微量镉、汞、锌的离子色谱法

阎大任1, 张静安1, G. Schwedt2   

  1. 1. 中南工业大学化学系;
    2. Institut für Anorganishe und Analytische Chemic, U-Clauthal. FRG
  • 收稿日期:1988-06-30 出版日期:1990-02-24 发布日期:1990-02-24
  • 通讯作者: 阎大任
  • 基金资助:

    中国自然科学基金会;联邦德国大众汽车厂基金会

Ion Chromatographic Analysis for Simultaneously Determining Trace Amounts of Hg, Cd, Zn Using Meso-Tetra(4-Sulfonatophenyl) Porphyrin as Post-Chromatographic Derivatization Agent

Yan Daren1, Zhang Jingan1, Georg Schwedt2   

  1. 1. Department of Chemistry, Central South University of Technology, Changsha;
    2. Institut fur Anorganische and. Analytische Chemie TU-Clausthal FRG
  • Received:1988-06-30 Online:1990-02-24 Published:1990-02-24

摘要: 提出了以TPPS4为柱后色谱衍生试剂的同时测定微量汞、镉和锌的离子色谱分析法,研究了影响衍生反应速度的因素。在含氯化钠的pH10.3~12的硼酸钠缓冲介质中,以PAR催化TPPS4与待测金属离子反应,以硅质键合相阳离子交换剂为固定相、酒石酸—氯化钠为流动相,于10min左右定量分离金属离子并将镉的淋洗顺序调至锌前。用于废水、硅酸盐和大米分析,结果满意。

关键词: 离子色谱, 卟啉试剂, 汞、镉、锌的同时测定

Abstract: An ion chromatographic methodising porphyrin TPPS4 as post-chromatographic derivatiza-tion agent has been developed for simultaneously determining trace amounts of Hg, Cd, Zn. The factors affecting the derivatization reaction rate were investigated. Adetection system consisting of TPPS4 with PARas accelerating agent of derivatization in the buffer of Na2B4O7-NaOH(pH10.3-12) containing NaCl was proposed. Aseparation system with sillica gel chemically bonded cation exchanger as stationary phase and the tartaric acid-NaCl as mobile phase was selected for separation of these metal ions. The separation can be finished in 10 min and the elution order can be adjusted from Zn-Cd to Cd-Zn. This method was applied to the analysis of waste water, sillicate and the corn with satisfactory results.

Key words: Ion chromatography, Porphyrin agent, Simultaneous determination of Hg, Cd and Zn

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