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Physical and chemical associations of radionuclides and trace metals in estuarine sediments: an example from Poole Harbour, Southern England

Physical and chemical associations of radionuclides and trace metals in estuarine sediments: an example from Poole Harbour, Southern England
Physical and chemical associations of radionuclides and trace metals in estuarine sediments: an example from Poole Harbour, Southern England
The physical (grain size) and chemical (mineral, oxyhydroxide coatings and organic matter) associations of 60Co, 137Cs, 210Pbxs, Pb, Zn and Cu have been examined in two intertidal sediments (from low and medium energy environments). 60Co, 210Pbxs, Pb, Zn and Cu show a distribution with particle size controlled by Fe- and Mn-oxyhydroxides and total organic carbon. Activity/concentration maxima for these isotopes and elements occur in the 2–8 ?m size fraction. A proportion of the 60Co present appears to have been diagenetically mobilised. In contrast 137Cs is strongly sorbed by clay particles and is virtually non-exchangeable.
0265-931X
191-211
Cundy, Andrew B.
994fdc96-2dce-40f4-b74b-dc638286eb08
Croudace, Ian W.
24deb068-d096-485e-8a23-a32b7a68afaf
Cundy, Andrew B.
994fdc96-2dce-40f4-b74b-dc638286eb08
Croudace, Ian W.
24deb068-d096-485e-8a23-a32b7a68afaf

Cundy, Andrew B. and Croudace, Ian W. (1995) Physical and chemical associations of radionuclides and trace metals in estuarine sediments: an example from Poole Harbour, Southern England. Journal of Environmental Radioactivity, 29 (3), 191-211. (doi:10.1016/0265-931X(95)00031-5).

Record type: Article

Abstract

The physical (grain size) and chemical (mineral, oxyhydroxide coatings and organic matter) associations of 60Co, 137Cs, 210Pbxs, Pb, Zn and Cu have been examined in two intertidal sediments (from low and medium energy environments). 60Co, 210Pbxs, Pb, Zn and Cu show a distribution with particle size controlled by Fe- and Mn-oxyhydroxides and total organic carbon. Activity/concentration maxima for these isotopes and elements occur in the 2–8 ?m size fraction. A proportion of the 60Co present appears to have been diagenetically mobilised. In contrast 137Cs is strongly sorbed by clay particles and is virtually non-exchangeable.

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Published date: 1995
Organisations: Geochemistry

Identifiers

Local EPrints ID: 399540
URI: https://eprints.soton.ac.uk/id/eprint/399540
ISSN: 0265-931X
PURE UUID: a9b20d21-60ec-46df-966c-e03c8442e4df
ORCID for Andrew B. Cundy: ORCID iD orcid.org/0000-0003-4368-2569

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Date deposited: 18 Aug 2016 10:55
Last modified: 06 Jun 2018 12:21

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