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Geochemical regulations of trace elements distribution in objects of the environment of Kyiv

ABSTRACT

 

Report on the research project: 174 p., 5 chapters, 31 tables, 34 figures, 101 references.

The object of the research: soil deposits, underground and surface waters, bottom deposits of water reservoirs of Kyiv.

The purpose of the research is to investigate the regularities of trace elements distribution in the environmental objects of the Kyiv city agglomeration.

Research methods: general chemical analysis, mineralogical, granulometric, potentiometric, atomic absorption, mass spectrometry with inductively coupled plasma methods. For mathematical and statistical processing of the data – Origin 7.0 and Microsoft Excel packages were used; for the construction of maps – geographic information systems MapInfo Professional and Golden Software Surfer were used; for mathematical modeling of migration forms of chemical elements – GEMS software complex was implemented.

As a result of lithogeochemical research, technogenic geochemical anomalies in the soil deposits of Kyiv were discovered. An increase in the content of pollutants tenfold compared to the background was established. The indicator of total soil pollution ranges from 20 to 80, a corresponding map has been constructed. Series of intensity of pollution and mobility of heavy metals in soils with different level of technigenic pressure were constructed. In technogenically polluted soils of industrial zones, changes in the ratio of the forms of microelements are found, the content of mobile forms increases and the physicochemical properties change.

In drinking artesian waters of the city of Kyiv, the content of trace elements was determined: V, Co, Ni, Cd, Ti, Zr, Ce, Sc, La, Y, Yb according to the median value of the sample. Median value is proposed to be taken as a natural background. The database of hydrogeochemical data regarding the dynamics of changes in the concentration of Ba, Cr, Ag, Fe, Mn, Cu, Sr, Mo, Zn has been supplemented. The regularities of heavy metals distribution in bottom sediments of the largest water reservoirs were considered, and the contamination of the bottom sediments at a dangerous level in Nizhniy Telbin Lake was determined.

The results of the research can be used by business entities, management and environmental protection organizations in the ecological assessment of the environmental components of the urbanized territories of Ukraine.

Authors:

Samchuk Anatolii Ivanovych

Krasiuk Olha Petrivna

Stadnyk Volodymyr Oleksiiovych

Voitiuk Yuliia Yuriivna

Akimova Oksana Rostyslavivna

Vovk Kateryna Viacheslavivna

Other authors:

Keywords:

heavy metals, urbogeochemistry, hydrogeochemistry, technogenic geochemical anomalies, geochemical association, natural waters, total pollution index, biogeochemical index

Head of the research:

Kuraieva Iryna Volodymyrivna

Registration Card (RC):

0111U008698

Execution period of the research:

2012 - 2016