Abstract:
:The significance of colloidal fractions regarding the transport of artificial radionuclides in natural water systems is underlined by using sequential ultrafiltration both in the Rhône freshwater and the marine area under and outside the influence of the river outflow. Indeed, the Rhodanian aquatic system represents an interesting test site as various artificial radionuclides are released into the Rhône river by several nuclear installations. We focused our study on (137)Cs, (106)Ru, (60)Co, (238)Pu and (239+240)Pu. Our results show that Fe, Al and Organic carbon (OC) are the main components of colloidal matter. Colloids represent about 15% of dissolved (<450 nm) OC and 25% of dissolved Fe and Al exported towards the sea. Within the dissolved (< 450 nm) phase, these colloidal compounds are shown to account for the transport of 40% for both Co and Ru, 60% for (238)Pu and (239+240)Pu and have no significance on (137)Cs flux.
journal_name
J Environ Radioactjournal_title
Journal of environmental radioactivityauthors
Eyrolle F,Charmasson Sdoi
10.1016/S0265-931X(03)00178-4subject
Has Abstractpub_date
2004-01-01 00:00:00pages
273-86issue
3eissn
0265-931Xissn
1879-1700pii
S0265-931X(03)00178-4journal_volume
72pub_type
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