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Seasonal Cycles of Dissolved Cd, Mn and Zn in River Water Caused by Variations in pH Induced by Biological Activity

Seasonal Cycles of Dissolved Cd, Mn and Zn in River Water Caused by Variations in pH Induced by... pH, dissolved oxygen, Zn, Cd and Mnwere measured once a month for 2.5 years in the LotRiver, France. The pH is controlled by biologicalactivity (photosynthesis and respiration). Dissolvedoxygen variations are due to a combination ofbiological activity and of the temperature dependenceof the oxygen solubility. pH is the master variablefor concentrations of aqueous Zn, Cd and Mn, thelowest concentrations being associated with thehighest pH values, which occur during the summer. pH-related processes rather than redox phenomenaexplain variations in dissolved Mn. Variations indissolved Zn and Cd are also controlled bypH-dependent reactions (possibly related to thedissolutive behavior of solid Mn). http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Aquatic Geochemistry Springer Journals

Seasonal Cycles of Dissolved Cd, Mn and Zn in River Water Caused by Variations in pH Induced by Biological Activity

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References (21)

Publisher
Springer Journals
Copyright
Copyright © 2000 by Kluwer Academic Publishers
Subject
Earth Sciences; Geochemistry; Hydrology/Water Resources; Hydrogeology; Water Quality/Water Pollution
ISSN
1380-6165
eISSN
1573-1421
DOI
10.1023/A:1009682127288
Publisher site
See Article on Publisher Site

Abstract

pH, dissolved oxygen, Zn, Cd and Mnwere measured once a month for 2.5 years in the LotRiver, France. The pH is controlled by biologicalactivity (photosynthesis and respiration). Dissolvedoxygen variations are due to a combination ofbiological activity and of the temperature dependenceof the oxygen solubility. pH is the master variablefor concentrations of aqueous Zn, Cd and Mn, thelowest concentrations being associated with thehighest pH values, which occur during the summer. pH-related processes rather than redox phenomenaexplain variations in dissolved Mn. Variations indissolved Zn and Cd are also controlled bypH-dependent reactions (possibly related to thedissolutive behavior of solid Mn).

Journal

Aquatic GeochemistrySpringer Journals

Published: Oct 3, 2004

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