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| Legeleux, F; Reyss, Jl; Bonte, P; Organo, C. |
| Elemental analyses were carried out by Neutron Activation Analysis on eleven sediment cores from the North-East Tropical Atlantic, collected at two sites of the French EUMELI programme. Total uranium, molybdenum and arsenic concentrations increase from the surface to about 20 cm depth in cores from the eutrophic site, but remain constant in cores from the mesotrophic site. These profiles clearly highlight an enrichment of the three elements in the sediments from the eutrophic site, linked to the suboxic conditions encountered in these sediments. This entrapping of uranium in suboxic sediments, observed in previous studies (Barnes and Cochran, 1990; Klinkhammer and Palmer, 1991), is thus confirmed at the EUMELI eutrophic site. Furthermore, other elements,... |
| Tipo: Text |
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| Ano: 1994 |
URL: http://archimer.ifremer.fr/doc/00099/21005/18631.pdf |
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