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Trace porphyrin complexes: Fluorescence detection by demetallation with methanesulfonic acid

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Summary

A method is described for the detection and spectral examination of traces of porphyrin complexes by controlled demetallation and spectrofluorometry. By carrying out the demetallation with methanesulfonic acid in the optical cell, difficulties connected with handling losses and introduction of contamination are minimized. The method is sensitive to quantities as low as 0.05 ng.

Zusammenfassung

Ein Verfahren zum Nachweis und zur spektralanalytischen Untersuchung von Spuren von Porphyrinkomplexen wurde beschrieben, das auf der kontrollierten Abspaltung des komplex gebundenen Metalls und darauffolgender Fluoreszenzmessung beruht. Führt man die Dekomplexierung mit Methansulfonsäure in der optischen Zelle des Meßgerätes durch, so werden Verluste und Verunreinigungen weitgehend vermieden. Die Methode erlaubt den Nachweis auch noch von 0,05 ng.

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Author notes

  1. G. W. Hodgson (NRC-NASA Resident Senior Research Associate)

    Present address: Department of Genetics, Stanford University School of Medicine, 94304, Palo Alto, Calif., USA

Authors and Affiliations

  1. Ames Research Center, NASA, Moffett Field, 94035, Calif., USA

    G. W. Hodgson (NRC-NASA Resident Senior Research Associate), Etta Peterson & B. L. Baker

  2. The Research Council of Alberta, Edmonton, Alberta, Canada

    G. W. Hodgson (NRC-NASA Resident Senior Research Associate), Etta Peterson & B. L. Baker

Authors
  1. G. W. Hodgson
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  2. Etta Peterson
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  3. B. L. Baker
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Hodgson, G.W., Peterson, E. & Baker, B.L. Trace porphyrin complexes: Fluorescence detection by demetallation with methanesulfonic acid. Mikrochim Acta 57, 805–814 (1969). https://doi.org/10.1007/BF01216320

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  • DOI: https://doi.org/10.1007/BF01216320

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