Intertidal mangrove mudflat [sup.240+239]Pu signatures, confirming a [sup.210]Pb geochronology on the southeastern coast of Brazil

Intertidal mangrove mudflat [sup.240+239]Pu signatures, confirming a [sup.210]Pb geochronology on the southeastern coast of Brazil

A sediment core was taken to determine if sediment accumulation rates could be conducted using [sup.240+239]Pu signatures in the coastal mangrove mudflats of southeastern Brazil. The results from this study show that [sup.240+239]Pu fallout activities are sufficient and well preserved in the coastal...

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Veröffentlicht in:Journal of radioanalytical and nuclear chemistry 2010-03, Vol.283 (3), p.593
Hauptverfasser: Sanders, C.J, Smoak, J.M, Sanders, L.M, Waters, M.N, Patchineelam, S.R, Ketterer, M.E
Format: Artikel
Sprache:eng
Schlagworte:
Chlorophyll
Coastal ecosystems
Geochronology
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Zusammenfassung:A sediment core was taken to determine if sediment accumulation rates could be conducted using [sup.240+239]Pu signatures in the coastal mangrove mudflats of southeastern Brazil. The results from this study show that [sup.240+239]Pu fallout activities are sufficient and well preserved in the coastal sediments of this region. Sediment accumulation rates determined from the [sup.240+239]Pu signatures were 4.4 mm/year and 4.1 from [sup.210]Pb (CIC) method. A sediment mixing coefficient rate was calculated using chlorophyll-a profile (9.5 [cm.sup.2]). Keywords [sup.240+239]Pu * [sup.210]Pb * [sup.226]Ra * Brazil
ISSN:0236-5731
DOI:10.1007/s10967-009-0418-7