Deposition of copper in the eutrophic, submontane Dobczyce dam reservoir (southern Poland): Role of speciation

In order to better understand Cu behaviour in the submontane, eutrophic Dobczyce dam Reservoir (southern Poland), speciationmeasurements of Cu in the water and the sediment were conducted. To investigate the partitioning of Cu in the main components ofthe sediment, a scheme of VI-step sequential ext...

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Bibliographic Details
Published in:Water, air, and soil pollution air, and soil pollution, 2002-10, Vol.140 (1-4), p.203-218
Main Authors: SZAREK-GWIAZDA, Ewa, MAZURKIEWICZ-BORON, Grazyna
Format: Article
Language:English
Subjects:
Applied sciences
Biological and physicochemical properties of pollutants. Interaction in the soil
Bottom water
Continental surface waters
Copper
Deposition
Dissolution
Earth sciences
Earth, ocean, space
Engineering and environment geology. Geothermics
Environmental monitoring
Eutrophic environments
Eutrophic waters
Eutrophication
Exact sciences and technology
Freshwater
Natural water pollution
Particulate matter
Phases
Pollution
Pollution, environment geology
Reservoirs
Seasonal variations
Sediments
Soil and sediments pollution
Speciation
Water treatment and pollution
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Summary:In order to better understand Cu behaviour in the submontane, eutrophic Dobczyce dam Reservoir (southern Poland), speciationmeasurements of Cu in the water and the sediment were conducted. To investigate the partitioning of Cu in the main components ofthe sediment, a scheme of VI-step sequential extraction was used.In addition, other physical and chemical parameters of the water,such as temperature, pH, dissolved O sub(2), nutrients, and suspended particulate matter were determined. Copper content in the water and the sediment was low (1.1-7.4 kg L super(-1) and 5.5-45.4 kg g super(-1), respectively). In the water Cu was usually present in the dissolved state (with the exception ofthe near-bottom water). This was probably the main reason of itssmall accumulation (cumulation coefficient K = 10687.5) in the sediment of the Dobczyce Reservoir. The seasonal variations inCu contents in the dissolved and particulate phases as well as observed correlations with the physico-chemical parameters of thewater are discussed. In the sediment Cu occurred mainly in astrongly bound form. Most Cu found there was in the moderatelyreducible phase and residual. Therefore, copper (re-)mobilization from the sediment to the water was probably not of importance.
ISSN:0049-6979
1573-2932
DOI:10.1023/A:1020139716502