Titre :
|
Comparison of Cu and Zn cycling in eutrophic lakes with oxic and anoxic hypolimnion
|
Auteurs :
|
H. Xue ;
R. Gachter ;
L. Sigg
|
Type de document :
|
article/chapitre/communication
|
Année de publication :
|
1997
|
Format :
|
p. 176-189
|
Langues:
|
= Anglais
|
Catégories :
|
EAU
|
Mots-clés:
|
LAC
;
EUTROPHISATION
;
METAUX LOURDS
;
ANOXIE
;
OXYGENE
;
CYCLE
;
SEDIMENTATION
|
Résumé :
|
Data on the cycling of Cu and Zn in two eutrophic lakes are presented: Lake Greifen that becomes seasonally anoxic in its hypolimnion and Lake Sempach that is aerated during winter and oxygenated during summer. They suggest that hypolimnetic oxygenation 1) enhances the release of copper from the sediment but 2) also accelerates the entrapment and deposition of Cu and Zn by freshly formed Mn- and Fe-oxides.
|
Source :
|
Aquatic sciences, vol.59
|