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Information × Registration Number 0221U102116, 0116U002041 , R & D reports Title Migration, distribution and transformation of chemical elements and natural organic substances in the abiotic components of aquatic ecosystems and their influence on the aquatic environment quality popup.stage_title Head Linnik Petro M., д.х.н. Registration Date 28-01-2021 Organization Institute of Hydrobiology of the National Academy of Sciences of Ukraine popup.description2 Object of research: the upper part of the Kaniv reservoir, lake systems of the urbanized territory and mountain rivers of Transcarpathia. Purpose: to study the peculiarities of migration and distribution of chemical elements (metals, nutrients) and natural organic substances between abiotic components of aquatic ecosystems and to study the transformation of coexisting forms of metals, nutrients and organic substances under the influence of environmental factors and processes occurring in surface water bodies to assess their impact on the quality of the aquatic environment. Research methods: titrimetric, spectrophotometric, photometric, chemiluminescent, ion exchange and gel chromatography, membrane filtration. Results and their novelty. On the example of different types of water bodies, in particular lake systems of urbanized territory (Kyiv) and rivers of the Tisza basin, coexisting forms of metals (Al, Fe, Cu, Mn, Cr, Mo, Cd, Pb, Zn, Ni), biogenic and organic substances in surface waters are studied, as their migration capacity and distribution among abiotic components of aquatic ecosystems depend on the forms of being in water. The relevance of research is also due to the fact that the chemical and biological activity, and ultimately the potential bioavailability and toxicity of most chemical elements depends largely on the ratio of labile and non-labile fractions aquatic medium. The component composition of natural organic substances has been studied and their share, which is potentially bioavailable for assimilation by aquatic organisms, has been clarified. The potential complexing ability of different groups of organic substances in relation to metals has been established. Recommendations for the use of work results. The obtained research results are an important scientific basis for developing the concept of assessing the state of surface water bodies by hydrochemical parameters, taking into account the forms of chemical substances in the aquatic environment. Product Description popup.authors Yevtukh Tetiana V. Ivanechko Yaroslav S. Ignatenko Iryna I. Zhezherya Vladyslav A. Zhezherya Tetiana P. Zubenko Iryna B. Koniukh Lilia I. Linnik Petro M. Morozova Alla O. Osypenko Valentyna P. Skoblei Mariia P. popup.nrat_date 2021-01-28 Close