INAA with gamma-gamma coincidence for selenium determination in food

Selenium detection limits of INAA are normally above its concentration in most biological materials. Gamma-gamma coincidence methodology can be used to improve the detection limits and uncertainties in the determination of selenium. Here, some edible parts of plants were measured using a HPGe detect...

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Bibliographic Details
Published inJournal of radioanalytical and nuclear chemistry Vol. 278; no. 3; pp. 761 - 765
Main Authors Di Piero, A., Bacchi, M. A., Fernandes, E. A. N.
Format Journal Article
LanguageEnglish
Published Dordrecht Springer Netherlands 01.12.2008
Subjects
Chemistry
Chemistry and Materials Science
Diagnostic Radiology
Hadrons
Heavy Ions
Inorganic Chemistry
Instrumentation
Nuclear Chemistry
Nuclear Physics
Physical Chemistry
Instrumental Neutron Activation Analysis
Selenium
Manioc
Wheat Flour
Coincidence Counting
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Summary:Selenium detection limits of INAA are normally above its concentration in most biological materials. Gamma-gamma coincidence methodology can be used to improve the detection limits and uncertainties in the determination of selenium. Here, some edible parts of plants were measured using a HPGe detector equipped with a NaI(Tl) active shielding, producing spectra both in normal and coincidence modes. The results presented the reduction of the detection limits of selenium by a factor of 2 to 3 times and improvement in the uncertainty of up to 2 times.
Bibliography:ObjectType-Article-2
SourceType-Scholarly Journals-1
ObjectType-Feature-1
content type line 23
ISSN:0236-5731
1588-2780
DOI:10.1007/s10967-008-1607-5