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Fe and Al sedimentation and their importance as carriers for P, N and C in a large humic lake in northern Sweden
Umeå University, Faculty of Science and Technology, Department of Ecology and Environmental Sciences.
1997 (English)In: Water, Air and Soil Pollution, ISSN 0049-6979, E-ISSN 1573-2932, Vol. 99, no 1-4, 283-295 p.Article in journal (Refereed) Published
Abstract [en]

The sedimentation of organic, amorphous oxides, crystalline oxides and crystalline silicate species of Fe and Al was investigated in humic Lake Ortrasket. The covariation with C, N and P sedimentation also was studied. The results showed a strong temporal variation in the occurrence of different Fe species. During high discharge, such as in spring, Fe mostly occurred as crystalline Fe-silicate species, while the amorphous form dominated at other times of the year. Al generally sedimented as crystalline Al-silicate species (95%). Amorphous Fe species showed a strong relation with organic C and N, suggesting an association between organic material and amorphous Fe oxides. P was not as strongly related to amorphous Fe, probably as a result of apatite or clay bound-P species sedimentation.

Place, publisher, year, edition, pages
1997. Vol. 99, no 1-4, 283-295 p.
Keyword [en]
sedimentation, iron, aluminum, fractionation, organic material, phosphorus, humic lakes
Identifiers
URN: urn:nbn:se:umu:diva-50734DOI: 10.1007/BF02406868ISI: A1997XW68200031OAI: oai:DiVA.org:umu-50734DiVA: diva2:467937
Available from: 2011-12-20 Created: 2011-12-20 Last updated: 2017-12-08

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