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A Bayesian approach to assess data from radionuclide activity analyses in environmental samples

Authors
  • Barrera, Manuel
  • Lourdes Romero, M.
  • Nuñez-Lagos, Rafael
  • Bernardo, José M.
Type
Published Article
Journal
Analytica Chimica Acta
Publisher
Elsevier
Publication Date
Jan 01, 2006
Accepted Date
Oct 11, 2007
Volume
604
Issue
2
Pages
197–202
Identifiers
DOI: 10.1016/j.aca.2007.10.015
Source
Elsevier
Keywords
License
Unknown

Abstract

A Bayesian statistical approach is introduced to assess experimental data from the analyses of radionuclide activity concentration in environmental samples (low activities). A theoretical model has been developed that allows the use of known prior information about the value of the measurand (activity), together with the experimental value determined through the measurement. The model has been applied to data of the Inter-laboratory Proficiency Test organised periodically among Spanish environmental radioactivity laboratories that are producing the radiochemical results for the Spanish radioactive monitoring network. A global improvement of laboratories performance is produced when this prior information is taken into account. The prior information used in this methodology is an interval within which the activity is known to be contained, but it could be extended to any other experimental quantity with a different type of prior information available.

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