Presence of uranium and plutonium in marine sediments from gulf of tehuantepec, mexico

Uranium and plutonium were determined in the Tehua II-21 sediment core collected from the Gulf of Tehuantepec, Mexico. The analyses were performed using radiochemical separation and alpha spectroscopy. Activity concentrations of alpha emitters in the sediment samples were from 2.56 to 43.1 Bq/kg for...

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Bibliographic Details
Published in:Journal of radioanalytical and nuclear chemistry 2013-11, Vol.298 (2), p.981-986
Main Authors: Ordóñez-Regil, E., Almazán-Torres, M. G., Sanchez-Cabeza, J. A., Ruiz-Fernández, A. C.
Format: Article
Language:English
Subjects:
Analysis
Chemistry
Chemistry and Materials Science
Diagnostic Radiology
Hadrons
Heavy Ions
Inorganic Chemistry
Marine sediments
Nuclear Chemistry
Nuclear Physics
Physical Chemistry
Plutonium
Uranium
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Summary:Uranium and plutonium were determined in the Tehua II-21 sediment core collected from the Gulf of Tehuantepec, Mexico. The analyses were performed using radiochemical separation and alpha spectroscopy. Activity concentrations of alpha emitters in the sediment samples were from 2.56 to 43.1 Bq/kg for 238 U, from 3.15 to 43.1 Bq/kg for 234 U and from 0.69 to 2.95 Bq/Kg for 239+240 Pu. Uranium activity concentration in marine sediment studied is generally high compared with those found in sediments from other marine coastal areas in the world. The presence of relatively high concentrations of anthropogenic plutonium in the sediments from the Gulf of Tehuantepec suggests that anthropogenic radionuclides have been incorporated and dispersed into the global marine environment.
ISSN:0236-5731
1588-2780
DOI:10.1007/s10967-013-2496-9