The Spectrophotometric Evaluation of Phosphate in Soil Samples

F.E. Adelowo, S.O. Oladeji, K.A. Odelade

Abstract


The chemistry of soil indicate that it contain several chemical components ranging from organic to inorganic compounds. Some of these include phosphates, nitrates and sulphates amongst others. Phosphorus has  a  strong  affinity  for  soil  thereby  increasing  the rate  of  dissolved  phosphorus  that  will  be  transported in  runoff.  The phosphate levels could increase in the soil due to natural and human factors such as dumping of refuse from nearby areas, use of fertilizers and human excretes. Therefore, it is important to analyze the levels of orthophosphate (expressed in part per million) in soil using spectrophotometric methods. This was analyzed by molybdenum blue phosphorus method using UV-Visible spectrophotometric method and the phosphates level was measured at 880 nm. The calibration curve was formed using concentrations of 0.0 – 16.0 ppm.  The samples analyzed showed high levels of phosphates which could be due to natural and agricultural factors.


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References


M.A. Chaube and V.K. Gupta, ‟Spectrophotometric determination of phosphate in polluted waters by Solvent Extraction of Molybdenum Blue”, Analyst, vol. 108, pp. 1141-1144, 1983

T.E. Weier, C.R. Stocking and M.G. Barbour, "An introduction to plant Biology", 5thedition, University of California, Davis California, 1973.

S.O. Oladeji, F.E. Adelowo and K.A. Odelade, ‟Evaluation of Phosphate Level in Water Samples (Ogbomoso Rivers) using UV-Visible Spectrophotometric Method", Int J Sci Res Env Sci, vol. 4, issue 4, pp. 0102-0108, 2016

E.B. Hans, H.K. Hans, H. Per and T.N. Torsten, ‟Phosphate in Soil", Journal of Molecular and Cellular Cardiology, vol. 26, issue 1, page 41, 1994

V.C. Verma, “System of technical control for cane sugar factories in India”, Published by STAI , vol. 33, 1988.

A. Skoog, J. Holler and A. Nieman ‟Principles of Instrumental Analysis", Fifth ed. Thomson Learning, Inc: pp. 329-353. 1998.

A.I. Vogel’s ‟A Text Book of quantitative chemical analysis", 5th Ed Longmans London, 1991.

M. McCoy, ‟Goodbye Phosphates", Chemical and Engineering News, ACS, vol. 5, pp. 12, 2011

V. Smith, G. Tilman and J. Nekota, ‟Eutrophication impacts of Excess nutrient in Freshwater, Marine and Terrestrial Ecosystems", Environ Pol vol. 100, pp. 179, 1999

S.J. Kharat and S.D. Pagar, ‟Determination of Phosphate in Water Samples of Nashik District Rivers by UV-Visible Spectroscopy", E-Journal Chem, vol. 6, issue 1, pp. 515-521, 2009

C.X. Galhardo and J.C. Masini, ‟Spectrophotometric Determination of Phosphate and Silicate by Sequential Injection using Molybdenum Blue Chemistry", Analytical Chimica Acta vol. 4, issue 17, pp. 191-200, 1999

M. Jalali, ‟Phosphorus Status and Sorption Characteristics of some Calcareous Soils of Hamadan", Western Iran Environmental Geology, vol. 53, pp. 365-374, 2007


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MAYFEB Journal of Environmental Science
MAYFEB TECHNOLOGY DEVELOPMENT
Toronto, Ontario, Canada
ISSN 2371-7092