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The likelihood of phosphorus release from lake bottom sediments into bulk water as a result of changes in the physieochemical conditions in the lake has been analyzed by the method of sequential extraction proposed by Tessier el al. The procedure developed for estimation of the threat to water ecosystems posed by heavy metals accumulated in the bottom sediments, can be successfully applied in estimation...
This paper reports results of speciation analysis of selected heavy metals (Fe, Mn, Zn, Ni, Cu, Pb, Cd) in bottom sediment samples collected from 11 lakes in the area of Wielkopolski National Park, which is a protected area subjected to limited anthropogenic factors, The main aim of the study was determination of the distribution of the metals among five speciaiton forms defined by Tessier: exchangeable,...
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