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Spectrophotometric extractive determination of Ti in mineral samples and aluminium alloys as a mixed-ligand Ti(IV)-salicylhydroxamic acid-thiocyanate complex

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Abstract

A sensitive method for the determination of titanium, based on the formation of a mixed-ligand Ti (IV)-salicylhydroxamic acid-thiocyanate complex and extraction of this into a liquid ion-exchanger phase has been developed. The extract has maximum absorbance at 400–460 nm and the apparent molar absorptivity is 1.8 × 104l · mole−1 · cm−1 at 420 nm. The system obeys Beer's law at 420 nm in the range 0.16–3.20 mg/1 Ti, the detection limit being 0.1 mg/1. The method is found suitable for determination of titanium in aluminium alloys and silicate rocks.

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Authors and Affiliations

  1. Department of Analytical Chemistry, Faculty of Sciences, University of Granada, E-18071, Granada, Spain

    Luis Fermín Capitán-Vallvey

  2. Department of Analytical Chemistry, University College of Jaén, E-23071, Jaén, Spain

    Antonio Molina-Díaz, María Luisa Fernández de Córdova & Maria Isabel Pascual-Reguera

  3. University of Granada, E-23071, Jaén, Spain

    Antonio Molina-Díaz, María Luisa Fernández de Córdova & Maria Isabel Pascual-Reguera

Authors
  1. Luis Fermín Capitán-Vallvey
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  2. Antonio Molina-Díaz
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  3. María Luisa Fernández de Córdova
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  4. Maria Isabel Pascual-Reguera
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Capitán-Vallvey, L.F., Molina-Díaz, A., Fernández de Córdova, M.L. et al. Spectrophotometric extractive determination of Ti in mineral samples and aluminium alloys as a mixed-ligand Ti(IV)-salicylhydroxamic acid-thiocyanate complex. Mikrochim Acta 100, 305–311 (1990). https://doi.org/10.1007/BF01242891

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  • DOI: https://doi.org/10.1007/BF01242891

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