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Spectrofluorimetric method for determining trace quantities of nitrite ion

Spektrofluorimetrisches Verfahren zur Bestimmung von Nitritspuren

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Microchimica Acta Aims and scope

Summary

A sensitive fluorimetric method for the determination of nitrite ion is described. The procedure consists of diazotization ofo-amino-phenols followed by coupling with resorcinol, and reaction of the resulting azo compound with gallium sulfate. The intensity of the fluorescence is linearly dependent upon the nitrite concentration. The procedure permits the determination of 3·10−10–10−5g/ml nitrite ion. The method was applied for determining trace quantities of nitrite ion in meat products.

Zusammenfassung

Eine empfindliche spektralfluorimetrische Methode zur Bestimmung von Nitritionen wurde beschrieben. Das Verfahren beruht auf der Diazotierung vono-Aminophenolen und nachfolgender Kupplung mit Resorcin, wonach das Reaktionsprodukt mit Galliumsulfat zur Reaktion gebracht wird. Die Intensität der Fluoreszenz des Reaktionsproduktes steht zur Nitritkonzentration in linearer Abhängigkeit. Man kann so 3·10−10 bis 10−5 g/ml Nitrit bestimmen. Die Methode wurde zur Fleischuntersuchung angewendet.

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Hornyák, I., Székelyhidi, L. Spectrofluorimetric method for determining trace quantities of nitrite ion. Mikrochim Acta 80, 355–359 (1983). https://doi.org/10.1007/BF01202012

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  • DOI: https://doi.org/10.1007/BF01202012

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