The absolute standardization of 32P and 204Tl at LNMRI.
Appl Radiat Isot
; 60(2-4): 415-8, 2004.
Article
em En
| MEDLINE
| ID: mdl-14987677
32P and 204Tl solutions were standardized within the frame of the international key comparisons organized by bureau international des poids et mesures, in 2002. The activity concentration of 32P was measured by counting solid sources in a 4pibeta proportional gas flow counter and by liquid scintillation counting. The self-absorption in solid sources for 4pibeta counting and the presence of 33P as an impurity were evaluated. The combined standard uncertainty for 32P was 0.59% in the 4pibeta counting and 0.38% in the liquid scintillation counting. Liquid scintillation counting was used to measure the activity concentration of 204Tl with combined standard uncertainty of 0.35%.
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01-internacional
Base de dados:
MEDLINE
Assunto principal:
Radioisótopos de Fósforo
/
Padrões de Referência
/
Contagem de Cintilação
/
Radioisótopos de Tálio
Tipo de estudo:
Diagnostic_studies
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Evaluation_studies
País/Região como assunto:
America do sul
/
Brasil
Idioma:
En
Revista:
Appl Radiat Isot
Assunto da revista:
MEDICINA NUCLEAR
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SAUDE AMBIENTAL
Ano de publicação:
2004
Tipo de documento:
Article
País de afiliação:
Brasil
País de publicação:
Reino Unido