Sequential radioanalytical method for the determination of U and Th isotopes, sup(226)Ra and sup(210)Po using alpha spectrometry in samples of the Brazilian phosphate industry
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Journal of Radioanalytical and Nuclear Chemistry
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Resumo
The phosphate rocks used for the production of
phosphate fertilizers present in their composition radionuclides of the U and Th series. During the chemical
attack, the radionuclides are distributed to final products
and phosphogypsum. A sequential radiochemical procedure was implemented to determine the content of radionuclides alpha emitters in samples of fertilizers and
phosphogypsum produced in Brazil. The results obtained
show that the levels of radioactivity present in the fertilizers are of the same order of magnitude on those found in
the phosphogypsum, reaching values up to 1158 and
457 Bq kg-1
, for the U and Th series, respectively.
Como referenciar
SAUEIA, C.H.R.; MAZZILLI, B.P.; TADDEI, M.H.T. Sequential radioanalytical method for the determination of U and Th isotopes, sup(226)Ra and sup(210)Po using alpha spectrometry in samples of the Brazilian phosphate industry. Journal of Radioanalytical and Nuclear Chemistry, v. 281, n. 2, p. 201-204, 2009. DOI: 10.1007/s10967-009-0118-3. Disponível em: http://repositorio.ipen.br/handle/123456789/4826. Acesso em: 30 Dec 2025.
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