Preliminary studies of sediments from the Dobczyce drinking water reservoir

• Autorzy: Golas J , Kubica B. , Reczynski W. , Kwiatek W.M. , Jakubowska M. , Skiba M. , Stobinski M. , Dutkiewicz E.M. , Posmyk G. , Jones K.W. , Olko M. , Gorecki J.
• Języki publikacji: EN

Abstrakty

EN

The analysis of river and lake sediments indicates that the physical, chemical, biochemical and geochemical processes that influence the fate of toxic compounds and elements in sediments are numerous and complex (for example: sorption – desorption, oxidation – reduction, ion-exchange, biological activity). Due to the above-mentioned general statement, only a long term and complex research programme can lead to satisfactory answers to the questions relating to possible changes of water and environmental quality in the future. The aim of our study consisted in physical and chemical characterisation of sediments in in-depth profiles taken from the Dobczyce reservoir in southern Poland that is a main source of drinking water for the city of Kraków. Due to morphological reasons, 7 layers of sediment samples were distinguished from the ground level to about 90 cm below (total thickness of the sediments in the sampling site). Analysis of grain size distribution and application of x-ray diffraction method, enabled mineralogical description of sediments. The use of proton-induced x-ray emission (PIXE) and atomic absorption spectrometry (AAS) revealed elemental composition of the samples (Al, P, K, Ca, Sc, Ti, V, Cr, Mn, Fe, Co, Ni, Cu, Zn). Concentrations of natural ⁴⁰K and artificial ¹³⁷Cs radionuclides were determined by the use of gamma spectrometry. The following facts were established: 1) the oldest (deepest) and newest, recently deposited layers of sediments are similar in their physical and chemical properties. It means that the inflow of contaminants and biogenic compounds to the reservoir has changed little since it was constructed and filled with water; 2) the severe flood in 1997 changed significantly sediment composition and, in fact, led to purification of sediments in the Dobczyce reservoir.

Słowa kluczowe

EN

Dobczyce Reservoir; trace element; artificial radionuclide; sediment; drinking water; natural radionuclide

• Wydawca: -
• Czasopismo: Polish Journal of Environmental Studies
• Rocznik: 2005
• Tom: 14
• Numer: 5
• Opis fizyczny: p.577-584,fig.,ref.

Twórcy

autor

Golas J

• University of Science and Technology, Krakow, Poland

autor

Kubica B.

autor

Reczynski W.

autor

Kwiatek W.M.

autor

Jakubowska M.

autor

Skiba M.

autor

Stobinski M.

autor

Dutkiewicz E.M.

autor

Posmyk G.

autor

Jones K.W.

autor

Olko M.

autor

Gorecki J.

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