Fresenius' Zeitschrift für analytische Chemie

, Volume 334, Issue 6, pp 507–510 | Cite as

Ion-chromatographic trace analysis of mercury, cadmium and zinc by post-column derivatisation with a water-soluble porphyrin

  • Daren Yan
  • Jingan Zhang
  • Georg Schwedt
Elemental Analysis


A post-column derivatisation system with mesotetra (4-sulfonatophenyl)-porphyrin (TPPS4) and PAR as accelerating agent in a borate buffer pH 11.5 in the presence of tartrate and NaCl is proposed. The complexes of Cd, Zn and Hg have maximum absorption at 430 nm. The separation system consists of silica-gel chemically bonded cation exchanger as stationary phase and a tartrate-NaCl solution as mobile phase. The separation can be finished within 10 min. The calibration curves of these metal ions with the peak area of the chromatogram were found to be linear in the range of 0.002–0.8, 0.1–8.0 and 0.05–20.0 mg/l for Cd, Hg and Zn. The detection limits for Cd, Hg and Zn are 0.05, 5 and 1 ng. This new method was applied to the analysis of waste water, silicates and corn with satisfying results.


Waste Water Corn Mercury Silicate Cadmium 
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Ionen-chromatographische Spurenanalyse von Hg, Cd und Zn durch Nachsäulen-Derivatisierung mit einem wasserlöslichen Porphyrin


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Copyright information

© Springer-Verlag 1989

Authors and Affiliations

  • Daren Yan
    • 1
  • Jingan Zhang
    • 1
  • Georg Schwedt
    • 2
  1. 1.Department of ChemistryCentral South University of TechnologyChangsha/HumanPeoples Republic of China
  2. 2.Institute of Inorganic and Analytical ChemistryTechnical UniversityClausthal-ZellerfeldFederal Republic of Germany

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