Evaluation of conventional dry ashing and wet digestion methods for determination of Fe, Mn, Ni, Cu, Co, Mg, Zn, Ca, Mo and Se levels in dried samples of organic tomatoes (Solanum lycopersicum L,) by flame Atomic Absorbtion Spectrometry (FAAS)

Authors

  • Paulo César Cavalcante Vila Nova
  • Eduardo José de Arruda
  • Lincoln Carlos Silva de Oliveira
  • Gemima dos Santos
  • Antonia Railda Roel
  • Jusinei Meireles Stropa
  • Paulo César Cavalcante Vila Nova Universidade Federal do Mato Grosso do Sul
  • Eduardo José Arruda Universidade Federal da Grande Dourados
  • Lincoln Carlos Silva de Oliveira Universidade Federal do Mato Grosso do Sul
  • Gemima dos Santos Universidade Federal do Mato Grosso do Sul
  • Antônia Railda Roel Universidade Federal do Mato Grosso do Sul
  • Jusinei Meireles Stropa

DOI:

https://doi.org/10.20873/jbb.uft.cemaf.v3n4.nova

Keywords:

tomato, FAAS, micro and macronutrients

Abstract

The aim of this study was to investigate the effect of digestion and extraction of minerals in organic tomatoes to atomic spectrometry. Fe, Mn, Ni, Cu, Co, Mg, Zn, Ca, Mo e Se levels in seven organic samples of dried tomatoes (Solanum lycopersicum L.), were determined by flame atomic absorption spectrometry. Dissolution conditions in the wet digestion method were studied by investigating several variables, including type of acid mixture and acid volume and digestion time. Comparison with conventional dry ashing methods was also made. In order to check the element losses during digestion and the accuracy of the results, all tests were repeated with statistical analysis. The nitric-perchloric acid digestion method was efficient for Ca, Mg, Se and Zn. The extraction procedure with chloride acid was similar to the nitric-perchloric acid digestion and the nitric-perchloric acid digestion was equivalent to the conventional dry ashing for the Mn. For the Cu and Mo conventional dry ashing methods was more efficient. For the Ca conventional dry ashing methods no showed significative difference for the nitric-perchloric acid digestion. The extractions with chloride acid are promised, practical and simples, with lower riscs for the manusead and ambiental contaminations.

 

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Published

2012-11-17

How to Cite

Vila Nova, P. C. C., de Arruda, E. J., de Oliveira, L. C. S., dos Santos, G., Roel, A. R., Stropa, J. M., … Stropa, J. M. (2012). Evaluation of conventional dry ashing and wet digestion methods for determination of Fe, Mn, Ni, Cu, Co, Mg, Zn, Ca, Mo and Se levels in dried samples of organic tomatoes (Solanum lycopersicum L,) by flame Atomic Absorbtion Spectrometry (FAAS). Journal of Biotechnology and Biodiversity, 3(4), 159–165. https://doi.org/10.20873/jbb.uft.cemaf.v3n4.nova

Issue

Vol. 3 No. 4 (2012): Journal of Biotechnology and Biodiversity

Section

Chemistry

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