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Determination of trace elements in lichens by instrumental neutron activation analysis

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Abstract

Instrumental neutron activation analysis has been applied to analyze epiphytic specimens of the lichenCanoparmelia texana. Samples collected from the barks of the trees were previously cleaned, lyophilized and ground to be irradiated under a thermal neutron flux in the IEA-R1 nuclear reactor. Elements Al, As, Br, Ca, Cd, Cl, Co, Cr, Cs, Fe, Hf, K, La, Ce, Nd, Sm, Eu, Tb, Yb, Lu, Mg, Mn, Na, Rb, Sb, Sc, Se, Th, Ti, U, V and Zn were determined quantitatively by using short and long irradiations. Comparisons were made between the results for washed and unwashed samples as well as those collected in two different years, from individual palm trees and also from different sites of São Paulo State. The precision and the accuracy of the method were evaluated by analyzing NIST 1572a Citrus Leaves, IAEA 336 Lichen and USGS W-1 Rock reference materials.

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Authors and Affiliations

  1. Radiochemistry Division, Instituto de Pesquisas Energéticas e Nucleares-IPEN-CNEN/SP, P.O. Box 11 049, CEP 05422-970, São Paulo, SP, Brazil

    M. Saiki, C. G. Chaparro & M. B. A. Vasconcellos

  2. Instituto de Botânica, P.O. Box 4005, CEP 01061-970, São Paulo, SP, Brazil

    M. P. Marcelli

Authors
  1. M. Saiki
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  2. C. G. Chaparro
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  3. M. B. A. Vasconcellos
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  4. M. P. Marcelli
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Saiki, M., Chaparro, C.G., Vasconcellos, M.B.A. et al. Determination of trace elements in lichens by instrumental neutron activation analysis. J Radioanal Nucl Chem 217, 111–115 (1997). https://doi.org/10.1007/BF02055358

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  • DOI: https://doi.org/10.1007/BF02055358

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