Ion exchange recovery of rhenium and its determination in aqueous solutions by diffuse reflection spectroscopy

Тип публикации: статья из журнала

Год издания: 2004

Ключевые слова: rhenium; anion exchanger; sorption; diffuse reflection spectroscopy, Anion exchanger, Diffuse reflection spectroscopy, Rhenium, Sorption, chloride, copper, iron, molybdenum, nickel, potassium, rhenium, river water, sodium, stannous chloride, zinc, adsorption, analytic method, anion exchange, aqueous solution, article, calibration, catalyst, chemical model, complex formation, concentration (parameters), desorption, diffuse reflectance spectroscopy, extraction, infrared spectroscopy, ion exchange, physical chemistry, quantitative analysis, solid phase extraction, technique, water analysis

Аннотация: The existing technological schemes for processing rhenium-containing raw materials involve the recovery of Re from solutions, which can be effectively achieved by anion exchange method. The application of anion exchange also allows to study rhenium state in aqueous solutions and to develop analytical control methods. The present work is focused on investigation of ion exchange equilibrium in the analytical system Re(VII)HCl-SnCl2-KSCN-anion exchanger by means of sorption-desorption method as well as by electron, IR- and diffuse reflection spectroscopy. It was shown that rhenium can be quantitatively recovered from this system. It is proposed to use the sorption-spectroscopic method for Re(VII) determination in aqueous solutions. The calibration curve is linear in the concentration range of 0.5-20.0 mg/L (sample volume is 25.0 mL) and the detection limit is 0.05 mg/L. The presence of Mo(VI), Cu(II), Fe(II, III), Ni(II), Zn(II) as well as K+, Na+ do not hinder the solid-phase determination of rhenium. Rhenium (VII) determination by diffuse reflection spectroscopy was carried out in model solutions as well as in samples of river-derived water and in solutions obtained after the dissolution of spent catalysts.

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Издание

Журнал: Bulletin of the Korean Chemical Society

Выпуск журнала: Vol. 25, Is. 1

Номера страниц: 79-84

ISSN журнала: 02532964

Место издания: Seoul

Издатель: Korean Chemical Soc

Авторы

  • Kalyakina O.P. (Department of Chemistry,Krasnoyarsk State University)
  • Kononova O.N. (Department of Chemistry,Krasnoyarsk State University)
  • Kachin S.V. (Department of Chemistry,Krasnoyarsk State University)
  • Kholmogorov A.G. (Inst. of Chem. and Chem. Technology,Siberian Dept. of the Acad. of Sci.)

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