Transactions of KarRC RAS :: Scientific publications
Transactions of KarRC RAS :: Scientific publications

Transactions of KarRC RAS :: Scientific publications
Karelian Research Centre of RAS
ISSN (print): 1997-3217
ISSN (online): 2312-4504
Transactions of KarRC RAS :: Scientific publications
Background Editorial committee Editorial Office For authors For reviewer Russian version
Transactions of KarRC RAS :: Scientific publications

Electronic Journal OJS



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Precambrian Geology

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1999-2008


SCIENTIFIC PUBLICATIONS
А.В. Леонов, М.В. Зобкова.
Применение длительных БПК-экспериментов для сезонных исследований окисления компонентов органического веществав воде из разных районов Онежского озера
A.V. Leonov, M.V. Zobkova. Using long-term bod – experiments for seasonal research of organic matter components oxidation in water from different areas of Lake Onego // Transactions of Karelian Research Centre of Russian Academy of Science. No 9. Limnology and oceanology. 2021. P. 37–57
Keywords: biochemical oxygen demand; kinetic BOD parameters; water quality; organic matter components; Lake Onego
Extensive research on the oxidation of organic matter components using long-term BOD experiments at 20 and 10 °C was conducted on Lake Onego in different seasons in 2013–2017. Water samples were taken from the central part of the lake, Pukhtа, Kondopoga, Petrozavodsk Bays, as well as the estuarine zone of the River Shuya in two variations: surface horizon (0.5 to 1 m) or integral (from surface to bottom). The samples showed a multistage BOD development with two or three О2 demand stages in the first, second and linear stages, which demonstrate the different oxidation patterns of organic matter components. It was found that the type of the first stage (E- or А-type) and the water sampling procedure defined the variations of BOD parameters. As a result, four alternative effects of these factors were identified. Minimal О2 demand over the experimental period as well as a higher lability of oxidizable organic matter in the first BOD stage were found in water from the central part of the lake, confirming high quality of the water in this part of the lake. Elevated lability of oxidizable organic matter components in water from other parts of the lake was identified in spring. Strong correlation was found between various organic matter components (labile and oxidation-”stable” humic substances) and kinetic BOD parameters (R2 = 0.60–1.00). Suspended particulate matter also proved to influence BOD kinetic parameters.
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  Last modified: September 30, 2021