Simulated Mobilization of Metals From Sediments in Response to Lake Acidification

  • Nabil Arafat
  • Jerome O. Nriagu
Conference paper


The regeneratable forms of pollutant metals in lake sediments were estimated using different chemical extractants and the effects of lake acidification on the mobilization of such metal fractions studied in laboratory microcosm. The release of each metal was found to increase exponentially below a threshold pH value, which was about 4.0 for Cu, Ni, Zn, Cd and Fe. The data suggest that a large percentage of pollutant metals are mobile as determined by chemical extraction techniques and long-term release experiments.


Lake Sediment Overlie Water Surficial Sediment Total Metal Concentration Metal Release 
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Copyright information

© Springer Science+Business Media Dordrecht 1986

Authors and Affiliations

  • Nabil Arafat
    • 1
  • Jerome O. Nriagu
    • 1
  1. 1.National Water Research InstituteBurlingtonCanada

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