Fe, Mn, Al, Cu, Zn, and Cr in the sedimentary matter of Lake Onego

Kulik, Natalia; Efremenko, Natalia; Belkina, Natalia; Страховенко, В Д; Gatalskaya, Ekaterina; Орлов, А. В.

doi:10.1016/j.quaint.2022.04.005

Cited by 4 publications

(3 citation statements)

References 13 publications

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“…Therefore, on average, ~2500 tons of suspended solids enter the bay during the year: 50 tons of phosphorus, 60 tons of nitrogen, etc. [20]. It is in the bottom sediments of Kondopoga Bay that high concentrations of mercury in the bottom sediments (0.19 µg/g) were detected, which is an order of value higher than in other parts of the lake.…”

Section: Discussionmentioning

confidence: 79%

“…According to [20] the main inflow of lithophilic elements and heavy metals into Lake Onego is associated with river runoff (68%-97% of the total intake of each element in the region). These data fully correspond to the materials published by [36].…”

Section: Discussionmentioning

confidence: 99%

“…The main tributaries are the Vodla, Shuya and Suna Rivers, the average annual flow rate which is 4.36, 3.1 and 2.5 km 3 /year, respectively. According to published data, the main source of mineral and organic substances entering Lake Onego is river runoff, which provides 60% of the runoff into the lake [19,20].…”

Section: Study Areamentioning

confidence: 99%

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Distribution of Mercury in the Water-Suspended Matter-Bottom Sediments System of the Lake Onego Water Area

et al. 2022

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This paper presents for the first time data on the lateral distribution of total mercury in the water-suspended matter-bottom sediments system for the entire water area of Lake Onego, the second largest lake in Europe. The patterns of the total mercury vertical distribution in two types of bottom sediments stratification, have been established. The total mercury content in the Lake Onego water averages 0.32 ± 0.07 μg/L. The most common form of mercury in water is dissolved+colloid, with the exception of water samples from the Kondopoga and Povenetsky Bays. In the material of the sedimentation traps, the mercury content is 0.5 ± 0.3 μg/g, and in the upper and lower parts of the bottom sediments section is 0.067 ± 0.003 and 0.041 ± 0.001 μg/g, respectively. The paper considers the factors responsible for the mercury content increasing from the bottom sediments up through the sections. These factors include anthropogenic pollution, migration of Hg and its redeposition at the geochemical barrier together with Fe and Mn.

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Section: Discussionmentioning

confidence: 79%

Section: Discussionmentioning

confidence: 99%

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Distribution of Mercury in the Water-Suspended Matter-Bottom Sediments System of the Lake Onego Water Area

et al. 2022

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Foreword to the Special Issue of Quaternary International “Late Quaternary Paleolimnology N Eurasia”

Subetto

Bezrukova

Nazarova

et al. 2023

Quaternary International

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Geochemical Features of River Runoff and Their Effect on the State of the Aquatic Environment of Lake Onego

Kulik

Efremenko

Страховенко

et al. 2023

Water

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This paper presents the results of seasonal observations of the geochemical composition of the waters of the large tributaries of Lake Onego. The mineralogy and geochemistry of the suspended matter and the isotopic composition (oxygen-18 and deuterium) of the river waters were studied for the first time. The dependence of the chemical and isotopic compositions of the tributary water on the season and characteristics of the catchment area (swampiness and lacustrine) was revealed. It is shown that the river waters belong to the bicarbonate class of the calcium group and have low mineralization, high color and a similar composition to the main minerals of the suspended matter. It is determined that the difference between the multielement spectra of the water and suspended matter of the different rivers is closely related to the geological and geomorphological structures of river basins. It is established that the quantitative characteristics of the mineral and organic parts of the suspended matter, the ratios of the different minerals andthe size and patterning of the particles of detrital material in the tributaries differ. The change in the mineralogical and geochemical compositions of the suspended matter of each individual river over the year is insignificant. The influence of the river runoff on the formation of lake waters is manifested in the chemical composition of the lake waters. The quantitative ratios of the main ions, biogenic elements and microcomponents in lake water mainly correspond to their ratios in river waters. The mineral part of the dispersed sedimentary matter of the lake in its geochemical characteristics is close to the suspended matter of the river waters.

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Fe, Mn, Al, Cu, Zn, and Cr in the sedimentary matter of Lake Onego

Cited by 4 publications

References 13 publications

Distribution of Mercury in the Water-Suspended Matter-Bottom Sediments System of the Lake Onego Water Area

Distribution of Mercury in the Water-Suspended Matter-Bottom Sediments System of the Lake Onego Water Area

Foreword to the Special Issue of Quaternary International “Late Quaternary Paleolimnology N Eurasia”

Geochemical Features of River Runoff and Their Effect on the State of the Aquatic Environment of Lake Onego

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