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Issue 4, 1999
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An investigation of the origin and mobility of phosphorus in freshwater sediments from Bort-Les-Orgues Reservoir, France

Abstract

In order to assess the origin and the potential mobility of phosphorus (P) in the sediment of the Bort-Les-Orgues Reservoir, France, two sequential extraction schemes, i.e., the SMT (modified Williams method)and the Golterman schemes, were compared. Finally, the potential mobility of P in this sediment was estimated from results of sequential extraction. The SMT method appeared to be more satisfactory than the Golterman method, which is in accordance with results from a study currently carried out in the framework of the European programme Standards, Measurements and Testing. Iron-bound P and organic P were the dominant forms of P in the sediment; these forms are likely to be released at the sediment/water interface in case of anoxia and could diffuse into the water column, thus increasing the risk of eutrophication in this sensitive reservoir. The P stock (330±66 t) is not negligible and should be taken into account in any restoration project of the reservoir. The SMT procedure seems promising and will provide, in the near future, a valuable tool for water managers in the field of lake restoration.

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Article type: Paper
DOI: 10.1039/A902269D
Citation: J. Environ. Monit., 1999,1, 403-407
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    An investigation of the origin and mobility of phosphorus in freshwater sediments from Bort-Les-Orgues Reservoir, France

    V. Ruban, S. Brigault, D. Demare and A.-M. Philippe, J. Environ. Monit., 1999, 1, 403
    DOI: 10.1039/A902269D

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