PMID: 11900204Mar 20, 2002Paper

Ecological half-life of 137Cs in plants associated with a contaminated stream

Journal of Environmental Radioactivity
J D PelesI L Brisbin

Abstract

Ecological half-life (Te) is a useful measure for studying the long-term decline of contaminants, such as radionuclides, in natural systems. The current investigation determined levels of radiocesium (137Cs) in two aquatic (Polygonum punctatum, Sagittaria latifolia) and three terrestrial (Alnus serrulata, Myrica cerifera, Salix nigra) plant species from a contaminated stream and floodplain on the U.S. Department of Energy's Savannah River Site. Current 137Cs levels in plants were used in conjunction with historical data to determine Te of 137Cs in each species. Median concentrations of 137Cs were highest in S. latifolia (0.84 Bq g(-1)) and lowest in M. cerifera (0.10 Bq g(-1)). Te's ranged from 4.85 yr in M. cerifera to 8.35 yr in S. nigra, both terrestrial species. Te's for all aquatic (6.30 yr) and all terrestrial (5.87) species combined were very similar. The Te's of the two aquatic primary producers (P. punctatum and S. latifolia) in the Steel Creek ecosystem were somewhat longer than Te values previously reported for some consumers from this ecosystem.

References

Sep 24, 1999·Health Physics·M H PallerE L Peters
Feb 24, 2001·The Science of the Total Environment·J D PelesM H Smith
Jan 1, 1988·Environmental Pollution·V P Lowe, A D Horrill
Sep 29, 2012·Journal of Veterinary Diagnostic Investigation : Official Publication of the American Association of Veterinary Laboratory Diagnosticians, Inc·Marcia R S IlhaSheela Ramamoorthy

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Citations

Nov 26, 2013·Journal of Environmental Radioactivity·M H PallerR A Baker
Nov 18, 2008·Journal of Environmental Radioactivity·Ugur Cevik, Necati Celik
May 21, 2008·Journal of Environmental Radioactivity·M H PallerP D Fledderman
Oct 2, 2020·Journal of Environmental Radioactivity·T J Stocki, B M Braune
Oct 20, 2018·Journal of Environmental Radioactivity·Haruko M WainwrightKimiaki Saito
Apr 28, 2018·Journal of Environmental Radioactivity·Haruko M WainwrightKimiaki Saito
Feb 15, 2019·The Science of the Total Environment·Anna Burger, Irene Lichtscheidl

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