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https://doi.org/10.37358/Rev.Chim.1949

OSIM Nr. R102355
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Revista de Chimie (Rev. Chim.), Year 2014, Volume 65, Issue 9,





PETRA IONESCU, VIOLETA-MONICA RADU, DEÁK GYÖRGY, ELENA DIACU
Distribution, Partition and Fluxes of Trace Heavy Metals in
the Lower Danube River

Abstract:

Hazardous substances are distributed in aquatic environments between water body and sediments, in particular cases, sediments being re-suspended in large amounts into the water body (high water flow). These substances can be of synthetic or non-synthetic nature, being characterized by relatively low water solubility and high capacity of chemisorption at the surface of solid suspended particles. This study presents an integrated approach of both transport and transfer processes of heavy metals (lead and nickel) in the lower Danube River between km 375 to km 175. This is a location of interest, considering that in this part of the river there is possible an increased accumulation level of heavy metals related to the recent construction works in the area for the improvement of navigation conditions. Based on the partition coefficient (Kp), the transfer of the heavy metal ions from the soluble phase to the suspended matter bound phase has been determined. In order to assess the transport phenomena in aquatic environment, the associated mass flow rate related to the water body also was calculated. Keywords: aquatic environment, lead, nickel, dissolved and particle concentration


Issue: 2014, Volume 65, Issue 9
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