Determination of natural and anthropogenic radionuclides in soil--results of an European Union comparison.
Appl Radiat Isot
; 70(9): 1836-42, 2012 Sep.
Article
em En
| MEDLINE
| ID: mdl-22424841
ABSTRACT
A comparison was organised by the Institute for Reference Materials and Measurements (IRMM) among 73 environmental radioactivity monitoring laboratories for the determination of 15 radionuclides in soil. The reference material IAEA-375 soil was reprocessed to provide the comparison material and reference values traceable to SI units and SIR were established at IRMM. The analytical procedures used by participants laboratories are discussed and performances evaluted using relative deviations and E(n) numbers. This paper focuses on the results for (40)K, (90)Sr, (137)Cs, (226)Ra, (234)U, (235)U and (238)U. Worst performance was found for (90)Sr and (235)U, where 65% and 78% of the results, respectively, deviate more than 20% from the reference values. The use of the E(n) criterion revealed that the uncertainty estimation of many participants is poor.
Texto completo:
1
Coleções:
01-internacional
Base de dados:
MEDLINE
Assunto principal:
Radioisótopos
/
Radiometria
/
Poluentes Radioativos do Solo
/
Radiação de Fundo
Idioma:
En
Revista:
Appl Radiat Isot
Assunto da revista:
MEDICINA NUCLEAR
/
SAUDE AMBIENTAL
Ano de publicação:
2012
Tipo de documento:
Article
País de afiliação:
Bélgica