Document Detail


The implications of particle energy and acidic media on gross alpha and gross beta determination using liquid scintillation.
MedLine Citation:
PMID:  22200448     Owner:  NLM     Status:  Publisher    
Abstract/OtherAbstract:
The interaction of humans with radioactivity present in the environment from natural and artificial sources necessitates an evaluation of its risk on human health. Gross alpha and gross beta activities can provide a rapid evaluation of the radioactive content of a sample and can be simultaneously determined by using liquid scintillation counters. However, calibration of the liquid scintillation counter is required and is affected by many factors, such as particle energy and the acidity of the media. This study investigates what effect the particle energy used for calibration has on misclassification and how to account for this misclassification in routine measurements. The variability in measurement produced by the final pH, as well as any acids used in sample treatment, was also studied. These results showed that the most commonly used acid for these types of analyses, HNO(3), produced a high amount of misclassifications at very low pH. The results improved when HCl was used to adjust the sample to low pH.
Authors:
D Zapata-García; M Llauradó; G Rauret
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Publication Detail:
Type:  JOURNAL ARTICLE     Date:  2011-12-16
Journal Detail:
Title:  Applied radiation and isotopes : including data, instrumentation and methods for use in agriculture, industry and medicine     Volume:  -     ISSN:  1872-9800     ISO Abbreviation:  -     Publication Date:  2011 Dec 
Date Detail:
Created Date:  2011-12-27     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  9306253     Medline TA:  Appl Radiat Isot     Country:  -    
Other Details:
Languages:  ENG     Pagination:  -     Citation Subset:  -    
Copyright Information:
Copyright © 2011 Elsevier Ltd. All rights reserved.
Affiliation:
Laboratori de Radiologia Ambiental (LRA), Departament de Química Analítica, Universitat de Barcelona, Martí i Franqués, 1-11 Planta 3, E-08028 Barcelona, Spain.
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