Chemical and algological composition of the snow cover at the mouth of the Onega river (White Sea basin)

• Published in: Pure and Applied Chemistry
• Main Authors: Kotova, Ekaterina I., Topchaya, Victoria Yu
• Format: Article in Journal/Newspaper
• Language: English
• Published: Walter de Gruyter GmbH 2021
• Subjects: Onega; White Sea
• Online Access: http://dx.doi.org/10.1515/pac-2021-0309; https://www.degruyter.com/document/doi/10.1515/pac-2021-0309/xml; https://www.degruyter.com/document/doi/10.1515/pac-2021-0309/pdf

Abstract In the study, the content and speciation of Mn, Pb, Cd, Zn, Cr, Ni, Co, Cu, and Fe in the snow cover at the mouth of the Onega river (White Sea basin) at the end of the winter periods in 2018, 2019 and 2020 were determined. Winter 2019 year was the snowiest, as the maximum values of the snow cover depth and water equivalent were almost two times higher than in all other years. The total content of suspended matter in the snow cover was 0.2–5.5 μg/L. Increased concentrations of suspended solids were identified near highways. Mn, Cr and Ni were present in the snow cover mainly in their dissolved form, while Fe, Pb and Co were mostly contained as solids. The algological composition of the snow cover was also studied.