COMPARISON OF AAS AND D.C.-ARC TECHNIQUES FOR MICRONUTRIENT DETERMINATION IN SOIL

Authors

  • E.M. Dallatu Federal Polytechnic, Nassarawa, Nassarawa State. Nigeria
  • R. Sha’ato
  • J.O. Offem

Abstract

Seven soil samp1es, collected randomly from the University of Agriculture Makurdi Teaching and Research Farm were combined to form a composite sample. Concentrations (in mg/kg) of the micronutrients (Cu, Fe, Mn and Zn) were determined by AAS and dc-arc spectrometric methods with the following results: Cu: 149±10, Fe: 135±9.0, Mn: 70±17 and Zn: 603±6.0 by AAs; while their corresponding concentrations by the arc-spectrometric method were, respectively 129±0.002, 130±0.001, 37.0±0.001 and 253±0.037. Statistical comparison of the two sets of results confirmed literature reports that the two methods are non-equivalent at the 95% confidence level. While the AAS method gave consistently higher concentrations of the analytes compared to the dc-arc spectrometric method, both methods gave the same trend in terms of the relative amounts of the micronutrients in the soil as Zn>Cu>Fe>Mn. Keywords:  AAS, d.c. arc-spectrometer, soil, micronutrients, Benue State

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Published

2017-02-14

How to Cite

Dallatu, E., Sha’ato, R., & Offem, J. (2017). COMPARISON OF AAS AND D.C.-ARC TECHNIQUES FOR MICRONUTRIENT DETERMINATION IN SOIL. Journal of Chemical Society of Nigeria, 41(2). Retrieved from http://www.journals.chemsociety.org.ng/index.php/jcsn/article/view/66

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