@ARTICLE{Madeyski_Marek_Fractionation_2009,
 author={Madeyski, Marek and Tarnawski, Marek and Jasiewicz, Czesława and Baran, Agnieszka},
 volume={vol.35},
 number={No 3},
 pages={47-57},
 journal={Archives of Environmental Protection},
 howpublished={online},
 year={2009},
 publisher={Polish Academy of Sciences},
 abstract={The aim of the study was fractionation of Zn, Cu, Ni, Pb in the bottom sediments of two small reservoirs: at Krempna on the Wisłoka River and at Zcslwicc on the Dlubnia River. The partitioning of metals for various fractions was performed with the use of Tessier's sequential chemical extraction method. All together five metal fractions were distinguished: exchangeable metals (fraction I), metals bound to carbonates (fraction II), metals bound to hydrate Fe-Mn oxides (fraction III), metals bound to organic matter (fraction IV), and metals bound to minerals (fraction V). The largest quantities of metals were bound with fraction V, the smallest occurred in the forms most easily available for living organisms, in faction I. Proportions ofZn, Ni and Pb in the exchangeable fraction were about 1%. The amounts of metals bound with fraction II were also relatively low, except lor Zn in bottom sediment at the Zeslawice Reservoir. In this bottom sediment the share of Zn bound to carbonates was 33%. Medium metal quantities were associated with hydrate Fe-Mn oxides (fraction III) and with organic matter (fraction IV). Relatively high proportion ofmetals in fraction V and trace amounts ofmetals in fraction I as well as alkaline and neutral reaction of the sediments may prove a potentially low hazard of the metal release in the case of chemical changes in the reservoirs.},
 type={Article},
 title={Fractionation of Chosen Heavy Metals in Bottom Sediments of Small Water Reservoirs},
 URL={http://ochroma.man.poznan.pl/Content/122962/PDF-MASTER/7_AE_VOL_35_3_2009_Madeyski_Fractionation.pdf},
 keywords={heavy metals, bottom sediments, sequential extraction, fractionation},
}