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

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

Authors

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

Corresponding author

Correspondence toC. 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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