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Radionuclides in the Environment

Influence of chemical speciation and plant uptake on radionuclide migration

  • Clemens Walther
  • Dharmendra K. Gupta

Table of contents

  1. Front Matter
    Pages i-x
  2. Brit Salbu, Lindis Skipperud, Ole Christian Lind
    Pages 1-36
  3. Andra-Rada Iurian, Marcelle Olufemi Phaneuf, Lionel Mabit
    Pages 37-59
  4. Snežana Dragović, Jelena Petrović, Ranko Dragović, Milan Đorđević, Mrđan Đokić, Boško Gajić
    Pages 61-80
  5. Katia N. Suzuki, Edimar C. Machado, Wilson Machado, Luis F. Bellido, Alfredo V. B. Bellido, Ricardo T. Lopes
    Pages 101-113
  6. P. K. Manigandan, B. Chandar Shekar, D. Khanna
    Pages 133-146
  7. P. K. Manigandan, B. Chandar Shekar, D. Khanna
    Pages 147-157
  8. Tania Jabbar, Gabriele Wallner
    Pages 169-184
  9. A. V. Voronina, V. S. Semenishchev, M. O. Blinova, P. Ju. Sanin
    Pages 185-207
  10. A. V. Voronina, N. D. Betenekov, V. S. Semenishchev, T. A. Nedobukh
    Pages 231-253
  11. Rodolfo Avila
    Pages 255-273

About this book

Introduction

This book provides extensive and comprehensive information to researchers and academicians who are interested in radionuclide contamination, its sources and environmental impact. It is also useful for graduate and undergraduate students specializing in radioactive-waste disposal and its impact on natural as well as manmade environments.

A number of sites are affected by large legacies of waste from the mining and processing of radioactive minerals. Over recent decades, several hundred radioactive isotopes (radioisotopes) of natural elements have been produced artificially, including 90Sr, 137Cs and 131I. Several other anthropogenic radioactive elements have also been produced in large quantities, for example technetium, neptunium, plutonium and americium, although plutonium does occur naturally in trace amounts in uranium ores. The deposition of radionuclides on vegetation and soil, as well as the uptake from polluted aquifers (root uptake or irrigation) are the initial point for their transfer into the terrestrial environment and into food chains. There are two principal deposition processes for the removal of pollutants from the atmosphere: dry deposition is the direct transfer through absorption of gases and particles by natural surfaces, such as vegetation, whereas showery or wet deposition is the transport of a substance from the atmosphere to the ground by snow, hail or rain. Once deposited on any vegetation, radionuclide

s ar

e removed from plants by the airstream and rain, either through percolation or by cuticular scratch. The increase in biomass during plant growth does not cause a loss of activity, but it does lead to a decrease in activity concentration due to effective dilution. There is also systemic transport (translocation) of radionuclides within the plant subsequent to foliar uptake, leading the transfer of chemical components to other parts of the plant that have not been contaminated directly.

Keywords

Artificial radioisotopes Bioaccumulation of radionuclides Environmental radioactivity Radioactive waste Radioecology Radiotracer

Editors and affiliations

  • Clemens Walther
    • 1
  • Dharmendra K. Gupta
    • 2
  1. 1.Institut für Radioökologie und StrahlensGottfried Wilhelm Leibniz Universität HaHannoverGermany
  2. 2.Institut für Radioökologie und StrahlensGottfried Wilhelm Leibniz Universität HaHannoverGermany

Bibliographic information

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