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

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Abstract

A sediment core was taken to determine if sediment accumulation rates could be conducted using 240+239Pu signatures in the coastal mangrove mudflats of southeastern Brazil. The results from this study show that 240+239Pu fallout activities are sufficient and well preserved in the coastal sediments of this region. Sediment accumulation rates determined from the 240+239Pu signatures were 4.4 mm/year and 4.1 from 210Pb (CIC) method. A sediment mixing coefficient rate was calculated using chlorophyll-a profile (9.5 cm2).

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Acknowledgments

This work was funded by the Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq), Brazil and Fulbright support to J.M.S. M.E.K. acknowledges support for ICPMS instrumentation from the US National Science Foundation (CHE-0116804 and EAR-0450977).

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Authors and Affiliations

  1. Departamento de Geoquímica, Universidade Federal de Fluminense (UFF), Niterói, RJ, Brazil

    C. J. Sanders & S. R. Patchineelam

  2. Environmental Science, University of South Florida (USF), St. Petersburg, FL, USA

    J. M. Smoak & L. M. Sanders

  3. Natural Sciences, Shorter College, Rome, GA, USA

    M. N. Waters

  4. Department of Chemistry and Biochemistry, Northern Arizona University, Box 5698, Flagstaff, AZ, USA

    M. E. Ketterer

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  1. C. J. Sanders
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  2. J. M. Smoak
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  3. L. M. Sanders
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  4. M. N. Waters
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  5. S. R. Patchineelam
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  6. M. E. Ketterer
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Correspondence to C. J. Sanders.

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Sanders, C.J., Smoak, J.M., Sanders, L.M. et al. Intertidal mangrove mudflat 240+239Pu signatures, confirming a 210Pb geochronology on the southeastern coast of Brazil. J Radioanal Nucl Chem 283, 593–596 (2010). https://doi.org/10.1007/s10967-009-0418-7

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  • DOI: https://doi.org/10.1007/s10967-009-0418-7

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