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Environmental and Geochemical Parameters of Bottom-Sediment from the Southern Bug Estuary

Mitryasova Olena, Koszelnik Piotr, Gruca-Rokosz Renata, Smyrnov Victor, Smyrnova Svitlana, Kida Małgorzata, Ziembowicz Sabina, Bezsonov Yevhen, Mats Andrii

Journal of Ecological Engineering

2021

Vol. 22, nr 2

244--255

The bottom sediments of river hydroecosystems were studied for the gross content of heavy metals (K, Ti Cr, Fe, Ni, Cu, Zn, Rb, Sr and Hg). The environmental and geochemical processes of bottom-sediment formation in aqua landscapes were analyzed, allowing us to stress the need to determine the methodological basis for the correlation-regression dependence of the heavy metal accumulation processes in bottom sediments, as well as total content of organic carbon. The ranking of pairwise correlation coefficients arranged in decreasing order is: TOC:Cu (0.87) >TOC:K (0.82) >TOC: Ni (0.75) > TOC:Sr (0.73) > TOC:Fe, (0.7) >TOC:Ti (0.67) > TOC:Hg (0.63) > TOC: Cr (0.58) >TOC:Rb (0.56) > and TOC:Zn (0.51). The proposed methodological approach determines the environmental and geochemical aspects of the sedimentation processes heavy metals, while also identifying the general trends in hydroecosystems prone to the anthropogenic impact.

Features of Heavy Metals Accumulation in Bottom Sediments of the Southern Bug Hydroecosystem

Mitryasova Olena, Koszelnik Piotr, Gruca-Rokosz Renata, Smirnov Victor, Smirnova Svitlana, Bezsonov Yevgen, Zdeb Monika, Ziembowicz Sabina

Journal of Ecological Engineering

2020

Vol. 21, nr 3

51--60

The performed studies allowed determining the peculiarities of heavy metals accumulation in the sediments, as well as the nature of their distribution in the hydroecosystem Southern Bug (Ukraine). Geochemical anomalies are formed in the zones of influence of industrial and urban agglomerations. Technogenic pollutions of bottom sediments with heavy metals affects the qualitative state of the water environment and can cause cumulative toxicosis on the hydrobiont population in the zones of geochemical anomalies formation, namely in the area of influence of the Nova Odessa and Mykolaiv cities. The mechanism of the cumulative toxicosis emergence is accompanied by chronic effects of low concentrations on hydrobionts with an excess of permissible fluctuations on a regional background, which ultimately contributes to the development of intoxication.