Identification of molecular composition of chromatic varieties of sand dunes of Ouargla ‎region, by using absorption infrared spectroscopy (FTIR)‎

  • Naouia MAHDADI Univ Ouargla, Fac. des Mathématiques et des Sciences de la Matière, Lab. Rayonnement et Plasmas et Physique des Surfaces, Ouargla 30 000 (Algérie)
  • Smail CHIHI Univ Ouargla, Fac. des Mathématiques et des Sciences de la Matière, Lab. Rayonnement et Plasmas et Physique des Surfaces, Ouargla 30 000 (Algérie)
Keywords: sand dunes, absorption IR (FTIR), chromatic separation, quartz, calcium carbonate

Abstract

In this work we knew the color distribution of the sand dunes of Ouargla region. By using manual chromatic separation, we have obtained six (6) different colors. They are: white, gray-black, brown-red, transparent white, transparent yellow and the remainder of separation process. The components of each samples have been identified, by using infrared absorption spectroscopy (FTIR). Analysis of experimental results showed that the difference of colors relates directly to the chemical composition and the contained impurities. It have been found that the white and gray samples contain an important concentrations of calcium carbonate (CaCO3), whereas the transparent white and yellow ones contain quartz (SiO2).

Published
2014-10-15
How to Cite
MAHDADI, N., & CHIHI, S. (2014). Identification of molecular composition of chromatic varieties of sand dunes of Ouargla ‎region, by using absorption infrared spectroscopy (FTIR)‎. Annals of Science and Technology, 6(2), 8. Retrieved from https://journals.univ-ouargla.dz/index.php/AST/article/view/406
Issue
Vol 6 No 2 (2014): volume 6 numéro 2 2014
Section
Articles