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

Abstract

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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Yan Daren, Zhang Jingan, Georg Schwedt. Ion Chromatographic Analysis for Simultaneously Determining Trace Amounts of Hg, Cd, Zn Using Meso-Tetra(4-Sulfonatophenyl) Porphyrin as Post-Chromatographic Derivatization Agent[J]. Chem. J. Chinese Universities, 1990, 11(2): 136.

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

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