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A simple method for the spectrophotometric determination of chloride by solvent extraction as chromyl chloride

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Summary

A simple and direct method for the spectrophotometric determination of chloride, based on the formation of chromyl chloride and its extraction into carbon tetrachloride has been developed. The absorption spectrum of the organic extract shows two bands at 300 and 415 nm; Beer's law is obeyed at both wavelengths over the range 20–320μg of chloride. The best conditions for the spectrophotometric determination of chloride are determined and a procedure is recommended. Interferences from some of the most common anions are studied.

Zusammenfassung

Eine neue Methode für die Bestimmung von Chloridionen wurde angegeben. Sie beruht auf der Bildung von Chromylchlorid und dessen Extraktion mit Tetrachlorkohlenstoff. Der Extrakt hat spektrale Maxima bei 300 und 415 nm. Das Beersche Gesetz ist zwischen 20 und 320μg Chlorid erfüllt. Die besten Bedingungen für die spektrophotometrische Bestimmung wurden ermittelt und ein Verfahren empfohlen. Störungsmöglichkeiten einiger üblicher Anionen wurden untersucht.

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Authors and Affiliations

  1. Faculty of Sciences, Department of Analytical Chemistry, Salamanca, Spain

    C. Gonzalez Perez, L. Polo Diez, A. Sanchez Perez & F. Lucena Conde

Authors
  1. C. Gonzalez Perez
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  2. L. Polo Diez
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  3. A. Sanchez Perez
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  4. F. Lucena Conde
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Perez, C.G., Diez, L.P., Perez, A.S. et al. A simple method for the spectrophotometric determination of chloride by solvent extraction as chromyl chloride. Mikrochim Acta 67, 29–35 (1977). https://doi.org/10.1007/BF01196526

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  • DOI: https://doi.org/10.1007/BF01196526

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