Iron Oxide Contents in Relation to the Colour of Asnawa Soils

Authors

DOI:

https://doi.org/10.25079/ukhjse.v1n1y2017.pp89-94

Keywords:

Asnawa, colour intensity, iron oxide

Abstract

Asnawa soils contain high amounts of iron oxides. These minerals apply much influence on different soil properties, of which the most observable is colour. The objective of this study was to conclude if colour of soils measured by visual methods can be parameterized to quantify soil Fe oxides. The examined area was divided to three zones (zone A, zone B and zone C) according to their colour intensity. Forty soil samples were examined for their colour and iron oxide contents. Their colour were ranged between 5YR (H) 2.5 (V/C) to 5YR (H) 5/8 (V/C). The average values of free Fe oxide in the soils of the three zones were 52.1%, 36.8% and 15.9% respectively. A new formula was derived to measure colour intensity. A highly significant correlation was found between colour intensity and concentrations of Fe oxides in the examined soils.

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Author Biography

  • Sherwan Kafoor, University of Kurdistan Hewlêr

    Dr. Sherwan Kafoor, assistant professor and director of quality assurance at UKH completed his MSC and Ph.D. degree from the University of Wales, Aberystwyth, UK in the field of chemistry of minerals "Iron and Aluminium oxides and Oxyhydroxides”. He joined Brunel University in 1994, worked, studied and completed his second MSc degree in 1997 in the field of Environmental Pollution Science with Legislation and management. Sherwan became an Environmental Pollution Expert, he continued his managerial career for years until his homecoming in 2010 to Kurdistan to join the Ministry of Higher Education and Scientific Research as a Director of Quality Assurance and Accreditation. In addition to his QA job, Sherwan was lecturing Clay Mineralogy in the Department of Soil Science, University of Salahaddin. He has 9 published scientific papers, he is also expert in landfill and recycling management. He Joined UKH on 1st of August 2016 as Director of Quality Assurance and Accreditation. He also teaches geochemistry and Environmental Pollution Science at the Department of NREM, UKH. Sherwan is the Editor-in-chief of two journals; UKHJSS and UKHJSE.

References

Cornell, R. M., & Schwertmann, U. (1996). The Iron oxides. Germany, Weinheim: VCH.

Cornell, R. M., & Schwertmann, U. (2003). The Iron oxides. 2nd ed. Weinheim: Wiley-VCH. pp. 664.

Fontes, M. P. F., Oliveira, T. S., Costa, L. M., & Campos, A. A. G. (2000). Magnetic separation and evaluation of magnetization of Brazilian soils from different parent materials. Geoderma, 96, 81-99.

Kafoor, S., & Mawloud, K. Q. (2007). Iron oxide mineralogy of asnawa soils, sulaimani province, Kurdistan region. Journal of Zankoy Sulaimani, 17(2), 105-117.

Kisser, I. M. (2005). Digestion of solid matrices, Part 1: Digestion with Aqua regia. Austria: Horizontal Draft Standard.

Mirabella, A., & Carnicelli, S. (1992). Iron oxide mineralogy in red and brown soils developed on calcareous rocks in central Italy.Geoderma, 55, 95-109.

Munsell Colour Company. (1975) Munsell soil colour chart. Baltimore, MD: Munsell Colour Co.

Scheinost, A. C., & Schwertmann, U. (1997). VIS-NIR Reflectance Spectra of α-goethite as a Function of Particle Size, Unit-cell Size, and Action Substitution. Huston, TX: 25th Lunar and Planetary Science Conference, pp. 7-21.

Scheinost, A. C., & Schwertmann, U. (1999). Color identification of iron oxides and hydroxysulfates - use and limitations. Soil Science Journal, 63, 1463-1471.

Scheinost, A. C., Chavrnas, A., Barron, V., & Torrent, J. (1998). Use and limitations of second-derivative diffuse reflectance spectroscopy in the visible to near-infrared range to identify and quantify Fe oxides in soils. Clays and Clay Miner, 46, 528-536.

Schwertmann, U. (1993) Relations between iron oxides, soil colour and soil formation. Special edition Vol. 31. Madison, WI: SSSA. pp. 51-69.

Torrent, J., & Baron, V. (1993) Laboratory measurement of soil colour: Theory and practice. In: Bigham, J. M., Ciolkosz E. J, editors. Soil colour. Madison, WI: Soil Science society of America. pp. 21-33.

Torrent, J., & Barron, V. (2003). Iron oxides in relation to the colour of Mediterranean soils. In Applied Study of Cultural Heritage and Clays. Madrid, Spain: CSIC Press. pp. 377-386.

Published

2017-12-29

Issue

Section

Research Articles

How to Cite

Iron Oxide Contents in Relation to the Colour of Asnawa Soils. (2017). UKH Journal of Science and Engineering, 1(1), 89-94. https://doi.org/10.25079/ukhjse.v1n1y2017.pp89-94