Determinação do pH de formação do complexo [Fe(o-fen)3]2+

Authors

  • Carmem D. Cardoso Departamento de Química, Centro de Ciências Naturais e Exatas - CCNE Universidade Federal de Santa Maria - UFSM, Santa Maria, RS.
  • Martha Bohrer Adaime Departamento de Química, Centro de Ciências Naturais e Exatas - CCNE Universidade Federal de Santa Maria - UFSM, Santa Maria, RS.
  • Nádia Suzana S. Viaro Departamento de Química, Centro de Ciências Naturais e Exatas - CCNE Universidade Federal de Santa Maria - UFSM, Santa Maria, RS.

DOI:

https://doi.org/10.5902/2179460X26358

Abstract

We suggest this research to find the better complexation's pH of [Fe(o-fen)3]2+ complex. The literature says only that this complex is quantitative since pH 2,0 until 9,0. We verify that at pH 9,2 the complex has the largest absorbance, showing that it is the largest pH complexation.

We conclude that 9,2 is the ideal pH for the complexation of Fe(lI) with 1, 10-phenantroline, when this complex is free of interferents.

 

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References

AYRES, G. H. Analisis Quimico Cuantitativo, Harper & Row Publishers Inc, New York, 1970, p. 162.

OHLWEILER, O. A. Química Analítica Quantitativa, Vol. 3, 2a ed., Livros Técnicos e Científicos Editora S. A., p. 311.

SMITH AND RICHTER. Fenantroline and·Substituted Phenantroline Indicators, G. Frederick Smith Chemical Co, Columbus, Ohio, 1994.

GOULD AND VOSBUGH. J. Am. Soc., 64, 1630 (1942).

LEE, T. S., KOLTHOFF, I. M. AND LEUSSING, D. L. J. Am. Soc., 70, 2350 (1948).

SKOOG, D. A. AND WEST, D. M. Fundamentals of Analytical Chemistry, 4a ed., Holt-Sanders International Ed., p. 790.

WILLARD, H. H., MERRIT Jr, L. L., DEAN, J. A. e SETTLE Jr, F. A. Instrumental Methods of Analysis, 6a ed., Wadsworth Publishing Company, Belmont.

Published

1993-12-13

How to Cite

Cardoso, C. D., Adaime, M. B., & Viaro, N. S. S. (1993). Determinação do pH de formação do complexo [Fe(o-fen)3]2+. Ciência E Natura, 15(15), 57–62. https://doi.org/10.5902/2179460X26358

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