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Analytical properties of di(2-pyridyl)methylene 2-furoylhydrazone and spectrophotometric determination of trace amounts of iron

Di-(2-pyridyl)methylen-2-furoylhydrazon als analytisches Reagens zur spektrophotometrischen Bestimmung von Eisenspuren

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Summary

The synthesis and analytical properties of di(2-pyridyl) methylene 2-furoylhydrazone (DPFH) are described. The solubility, spectral characteristics, andpK values are reported, as well as the absorptivity of metal chelates formed. The reaction between iron and DPFH has been studied by spectrophotometry. The green 1∶2 iron: DPFH complex (ε=8.4×103l·-mole−1·cm−1 at 620 nm) is formed at pH 5.3–11.3. The effect of interferences has been studied and the method applied to the determination of iron in cement, with good results.

Zusammenfassung

Synthese und analytische Eigenschaften von Di(2-pyridylmethylen-2-furoylhydrazon wurden beschrieben. Die Löslichkeit, die Spektraleigenschaften, diepK-Werte und die Absorptivität seiner Metall-Chelate wurden angegeben. Der grüne 1∶2-Komplex mit Eisen bildet sich bei pH 5, 3-11, 3. Störfaktoren wurden untersucht und die Eisenbestimmung in Zement beschrieben.

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Authors and Affiliations

  1. Department of Analytical Chemistry, Faculty of Sciences, University of Malaga, Spain

    A. Garcia de Torres, J. M. Cano Pavón & F. Castañeda

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  1. A. Garcia de Torres
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  2. J. M. Cano Pavón
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  3. F. Castañeda
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de Torres, A.G., Cano Pavón, J.M. & Castañeda, F. Analytical properties of di(2-pyridyl)methylene 2-furoylhydrazone and spectrophotometric determination of trace amounts of iron. Mikrochim Acta 84, 375–382 (1984). https://doi.org/10.1007/BF01197150

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  • DOI: https://doi.org/10.1007/BF01197150

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