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plutonium isotopes in marine sediments and some biota from the sudanese coast of the red sea.measurements of (239+240)pu and (238)pu were carried out on marine biota as well as on sediments from the fringing reefs area extending towards north and south (flamingo bay) of portsudan harbour. the analyses were performed using radiochemical separation and alpha spectrometry. the range of the activity concentrations in marine sediments, in mbq kg(-1) dry weight, was found to be from 5.10 to 82.00 for (239+240)pu and from 0.89 to 8.63 for (238)pu. corresponding activity concentrations of (239+ ...200818641000
distribution of (226)ra-(210)pb-(210)po in marine biota and surface sediments of the red sea, sudan.activity concentration levels and ratios of (226)ra, (210)pb and (210)po are presented in multicellular marine algae, molluscs, coral as well as in surface marine sediments collected from the shallower waters of the fringing reefs area extending towards north and south (flamingo bay) of portsudan harbour, sudan. the analyses were performed adopting alpha-spectrometry, liquid scintillation and cerenkov counting techniques. surface sediments from this coastal region are poor in their radioactivity ...200818774629
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