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Spectroscopic Determination of Iron in soil sample using 1,10-Phenanthroline
Subject area: Physical Sciences and Environment · Area of research: Chemistry
DOI: https://doi.org/10.64388/IREV10I3-1722696
Abstract
This study investigated the spectroscopic determination of iron in soil samples using 1,10-phenanthroline as a complexing reagent. The method is based on the formation of an intensely coloured iron (II)-1,10-phenanthroline complex, which was quantified by measuring its absorbance at 510 nm using a UV-Visible spectrophometer. A series of iron (II) standard solutions was prepared, and a calibration curve was established in accordance with the Beer–Lambert law. The resulting calibration equation was used to determine the concentration of soluble iron in four unknown soil samples. The measured absorbance values for Samples A, B, C and D were 0.32, 0.30, 0.24 and 0.24, corresponding to iron concentrations of 0.611, 0.570, 0.450 and 0.450 ppm, respectively. Sample A recorded the highest iron concentration, while Samples C and D had the lowest concentrations. The results demonstrate the applicability of the 1,10-phenanthroline method for the quantitative determination of iron in soil samples.
Keywords
Iron (II), 1,10-phenanthroline, Soil
References
[1] AOAC (1995), Official Methods of Analysis. 16th Edition, Association of Official Analytical Chemists, Washington DC.
[2] Gombe Geographic Information System, (2024). Plan No: CGS/70/2024
[3] J. R. Boulding (1994), Description and sampling of contaminated soils. (2nd Edition), Lewis Publishers, New York, p. 230 – 240.
[4] Rajbhandari, A. & Subedi, T. Scientific World, Vol. 11 No. 11, (2013).
[5] S. U. Onwudike, E. E. Ihem, I. F. Irokwe and G. Onwuso (2015), Variability in physico- chemical properties of soil of similar lithology in three land uses types in J Ahiazu Mbaise, Imo State, Nigeria. Journal of Agriculture and Crops 1(3), 38 - 43.
[6] Skoog, D. A., Holler, F. J., & Crouch, S. R. (2007). Principles of instrumental analysis (6th ed.). Thomson Brooks/Cole.
How to cite this paper
@article{1722696,
author = {Fidelis Bitrus, Elisha Karu, Zacheus Shehu},
title = {Spectroscopic Determination of Iron in soil sample using 1,10-Phenanthroline},
journal = {Iconic Research And Engineering Journals},
year = {2026},
volume = {10},
number = {3},
pages = {15-18},
issn = {2456-8880},
url = {https://www.irejournals.com/formatedpaper/1722696.pdf},
abstract = {This study investigated the spectroscopic determination of iron in soil samples using 1,10-phenanthroline as a complexing reagent. The method is based on the formation of an intensely coloured iron (II)-1,10-phenanthroline complex, which was quantified by measuring its absorbance at 510 nm using a UV-Visible spectrophometer. A series of iron (II) standard solutions was prepared, and a calibration curve was established in accordance with the Beer–Lambert law. The resulting calibration equation was used to determine the concentration of soluble iron in four unknown soil samples. The measured absorbance values for Samples A, B, C and D were 0.32, 0.30, 0.24 and 0.24, corresponding to iron concentrations of 0.611, 0.570, 0.450 and 0.450 ppm, respectively. Sample A recorded the highest iron concentration, while Samples C and D had the lowest concentrations. The results demonstrate the applicability of the 1,10-phenanthroline method for the quantitative determination of iron in soil samples.},
keywords = {Iron (II), 1,10-phenanthroline, Soil},
month = {September},
doi = {https://doi.org/10.64388/IREV10I3-1722696}
}