Year: 1980
Type: article
Abstract: Concentrations of 238 Pu, 239 + 240 Pu and 241 Am have been determined on particulate matter collected by filtcring through 1. 7-7.7 kl of Mediterranean surface water.The results show, on an average, that 3. 8 ± 0. 7, 2. 5 ± 0. 6 and 10 ± 3% of 239 + 240 Pu, 238 Pu and 241 Am are respectively retained by the filters.On the basis of 241 Am/ 239 + 240 Pu activity ratios in water and particulate, it is estirnated that the particles are enriched in 241 Am relative to plutonium by a factor of approximately 3 over the water.A possible role played by particles of biogenic and non-biogenic origins in the fractionation between plutonium and americium in the surface layer of the Mediterranean is discussed.Oceanol.Acta, 1980, 3, 2, 157-160.État particulaire du plutonium et de l'américmm dans les eaux de surface de la Méditerranée Les concentrations de 238 Pu, 239 + 240 Pu et 241 Am ont été déterminées sur des échantillons de matières en suspension, obtenus par la filtration de 1, 7-7,7 kl d'eau de surface en mer Méditerranée.Les résultats montrent, dans l'ensemble, que 3,8 ± 0, 7, 2,5 ± 0,6 et 10 ± 3% de 239 + 240 Pu, 238 Pu et 241 Am sont retenus respectivement sur les filtres.
Authors: Holm, E, Ballestra, S, Fukai, R, Beasley, Tm
Institutions: Lund University, Oregon State University
Language: English
Subfield: Pollution
Field: Environmental Science
Domain: Physical Sciences
Open Access status: green
OpenAlex ID: W1515724809