Abstract
Results obtained from the analysis of sediments surface samples taken from rivers mouth and polluted marine environment were analyzed for REE contents to determine the concentrations of La, Ce, Sm, Eu, Tb, Dy, Lu and Yb using instrumental neutron activation analysis. Thirty surface samples were collected from ten sites in the coastal marine sediments of the South China Sea along 957 km stretch of the east coast of Peninsular Malaysia. The samples prepared in the powdered form before irradiating them in a neutron flux of ~4 × 1012 n cm−2 s−1 at 750 kW power using the TRIGA Mark II research reactor at Malaysian Institute for Nuclear Technology (MINT). Results of the total concentration are used to establish baseline data in environmental pollution assessment and to develop the correlations between the Ce/Ce* anomalies and the distribution patterns of some the light rare earth elements (LREEs) and the heavy rare earth elements (HREEs). The Chondrite-normalized REE pattern from each site examined and used to explain the sedimentation patterns by anthropogenic activities and by natural processes such as shoreline erosion, weathering deposits. Shale-normalized (NASC) patterns suggest enrichment of LREEs relative to the HREEs with a positive Ce/Ce* anomaly. Validation of the used method was done using a Soil-7 SRM.
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Acknowledgements
The authors are thankful to the staff of TRIGA Mark II research reactor at Nuclear Institute in Malaysia for their assistance during the progress of work.
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Rezaee, K., Saion, E.B., Wood, A.K. et al. Rare earth elements determination and distribution patterns in surface marine sediments of the South China Sea by INAA, Malaysia. J Radioanal Nucl Chem 283, 823–829 (2010). https://doi.org/10.1007/s10967-009-0421-z
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DOI: https://doi.org/10.1007/s10967-009-0421-z