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Use of nuclear technique in samples for agricultural purposes REA
Oliveira,Kerley A. P. de; Menezes,Maria Ângela B. C.; Jacomino,Vanusa M. F.; Sperling,Eduardo Von.
The concern related to environment is growing. Due to this, it is needed to determine chemical elements in a large range of concentration. The neutron activation technique (NAA) determines the elemental composition by the measurement of artificial radioactivity in a sample that was submitted to a neutron flux. NAA is a sensitive and accurate technique with low detection limits. An example of application of NAA was the measurement of concentrations of rare earth elements (REE) in waste samples of phosphogypsum (PG) and cerrado soil samples (clayey and sandy soils). Additionally, a soil reference material of the International Atomic Energy Agency (IAEA) was also analyzed. The REE concentration in PG samples was two times higher than those found in national...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Neutron activation analysis; Multielemental analyses; Phosphogypsum; Rare earth elements.
Ano: 2013 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-69162013000100006
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