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Title: UBINSKOYE PEAT BOG DEPOSITS: ACCUMULATION AND SPECIATION OF ELEMENTS (NOVOSIBIRSK REGION, RUSSIA)
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UBINSKOYE PEAT BOG DEPOSITS: ACCUMULATION AND SPECIATION OF ELEMENTS (NOVOSIBIRSK REGION, RUSSIA)
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1314-2704
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English
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20
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3.1
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The study analyses the features of the peat sediment formation and elements concentration in the 0-310 cm core sample of peat deposits based on the example of the Ubinskoye peat bog located in the Novosibirsk region, Western Siberia. The stratigraphy and distribution features of chemical elements in the vertical profile are studied. Peat layers are characterized by an increase in the content of all elements in the middle and lower core intervals, which is probably a consequence of changes in the water regime and groundwater inflow at different stages of bog development. Increased concentrations of active air migrants forming volatile compounds, such as Pb, Cd, Cu and Zn, were found, which is associated with anthropogenic load. Element specifications investigated by the modified Tessier sequential extraction procedure, showed the vertical transition of the oxidative geochemical environment to the reducing one with the formation of geochemical barriers for variably valent elements. In the middle part of the section with organic-rich woody layers, the quantity of species associated with humic substances increases to 3-7% for almost all the studied elements.
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conference
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20th International Multidisciplinary Scientific GeoConference SGEM 2020
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20th International Multidisciplinary Scientific GeoConference SGEM 2020, 18 - 24 August, 2020
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Proceedings Paper
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STEF92 Technology
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International Multidisciplinary Scientific GeoConference-SGEM
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SWS Scholarly Society; Acad Sci Czech Republ; Latvian Acad Sci; Polish Acad Sci; Russian Acad Sci; Serbian Acad Sci & Arts; Natl Acad Sci Ukraine; Natl Acad Sci Armenia; Sci Council Japan; European Acad Sci, Arts & Letters; Acad Fine Arts Zagreb Croatia; C
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605-610
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18 - 24 August, 2020
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website
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cdrom
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7173
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peat bog; element concentration; geochemical profile; modified Tessier sequential extraction procedure
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