Determination of uranium in phosphoric acid using neutron activation analysis


Autoria(s): SILVA, N. C.; MACACINI, J. F.; FUKUMA, H. T.; FENANDES, E. A. N.
Contribuinte(s)

UNIVERSIDADE DE SÃO PAULO

Data(s)

18/10/2012

18/10/2012

2009

Resumo

Phosphoric acid is generally obtained from an aqueous process starting with the reaction between phosphate rock and sulphuric acid. Due to their chemical similarity, uranium is usually associated with phosphate rock which during chemical processing is partitioned to phosphoric acid. Uranium determination in this matrix is a very important task because of its ingestion it could lead to radiological impact on the population. Therefore, a procedure was developed using an initial precipitation with calcium hydroxide and evaporation, followed by instrumental neutron activation analysis (INAA). The procedure was applied to analyse fourteen uranium enriched phosphoric acid samples.

FAPEMIG-Fundacao de Amparo a Pesquisa do Estado de Minas Gerais

Identificador

JOURNAL OF RADIOANALYTICAL AND NUCLEAR CHEMISTRY, v.281, n.2, p.211-213, 2009

0236-5731

http://producao.usp.br/handle/BDPI/17024

10.1007/s10967-009-0116-5

http://dx.doi.org/10.1007/s10967-009-0116-5

Idioma(s)

eng

Publicador

SPRINGER

Relação

Journal of Radioanalytical and Nuclear Chemistry

Direitos

restrictedAccess

Copyright SPRINGER

Palavras-Chave #Uranium analysis #INAA #Phosphoric acid #NATURAL RADIOACTIVITY #PHOSPHATE ROCK #PHOSPHOGYPSUM #CONCENTRATE #BRAZIL #Chemistry, Analytical #Chemistry, Inorganic & Nuclear #Nuclear Science & Technology
Tipo

article

original article

publishedVersion