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THE GEOCHEMICAL SPECIFICS OF MODERN SEDIMENTATION PROCESSES ON THE BOTTOM OF A SMALL LAKE LAMBA UNDER TECHNOGENIC IMPACT

2017; Karelian Research Centre of RAS; Issue: 10 Linguagem: Inglês

10.17076/lim618

2312-4504

Zakhar Slukovskii, Николай Викторович Ильмаст, Ирина Викторовна Суховская, Екатерина Витальевна Борвинская, Максим Александрович Гоголев, Zakhar Slukovskii, N. V. Ilmast, Irina Sukhovskaya, Ekaterina Borvinskaya, Максим Александрович Гоголев,

Aquatic and Environmental Studies

The data on the chemical composition of bottom sediments of the small urban Lake Lamba located in the city of Petrozavodsk (Republic of Karelia) are presented. In this investigation we used modern precision methods for studying matter. Chemical analysis of bottom sediments of Lake Lamba was conducted using X-ray fluorescence spectrometer ARL ADVANT'X and mass spectrometer XSeries-2 ICP-MS. It was established that sediments in the lake are ferruginous (limonite) sapropels with a high content of organic matter. It is shown that the distribution of heavy metals and their accompanying microelements in the studied freshwater sediments reflects the industrial history of the city of Petrozavodsk and the general man-generated pollution in anthropogenically disturbed territories of the world. The distribution of V, Cr, Ni concentrations in the bottom sediments indicates a significant influence of the Petrozavodsk heating plant. The abnormally high Pb concentrations in the sediment layers are associated with global pollution of the environment by this heavy metal due to its input from traffic emissions. The distribution of Co, Cu, Zn, Mo, W concentrations reflects the impact of industrial enterprises in Petrozavodsk on the ecosystem of Lake Lamba.