Magneto-chemical characterisation of Saharan dust deposited on snow in Poland

0562878 - GFÚ 2024 RIV US eng J - Článek v odborném periodiku
Szuszkiewicz, M. M. - Lukasik, A. - Petrovský, Eduard - Grison, Hana - Blońska, E. - Lasota, J. - Szuszkiewicz, M.
Magneto-chemical characterisation of Saharan dust deposited on snow in Poland.
Environmental Research. Roč. 216, Part 2 (2023), č. článku 114605. ISSN 0013-9351. E-ISSN 1096-0953
Institucionální podpora: RVO:67985530
Klíčová slova: Saharan dust * environmental magnetism * chemical composition * atmospheric deposition
Obor OECD: Environmental sciences (social aspects to be 5.7)
Impakt faktor: 8.3, rok: 2022
Způsob publikování: Open access
https://www.sciencedirect.com/science/article/pii/S0013935122019326

Recent research has convincingly shown the advantages of combining environmental magnetism and geochemical analyses for the proxy estimation of anthropogenic pollution due to their atmospheric deposition in local environments. Few studies have also focused on anthropogenic particles deposited on snow. However, papers reporting on Sahara dust particles deposited on snow in central Europe and which involve magnetic methods are missing. To the best of our knowledge, this is the first study investigating the magnetic features of the SDE recorded in snowfall in this part of Europe (i.e. Poland). Our aim was to provide the magnetic char-acteristics and chemical elemental compositions of a snow horizon containing Saharan dust deposited near the Polish Jakuszyce meteorological station during a snowfall event that occurred from the 1st to the February 7, 2021. Samples of snow with and without Saharan dust were analysed with respect to iron oxide contents (magnetic susceptibility, hysteresis loop, magnetic remanence acquisition) and compared with chemical com-positions. Our results revealed the presence of both ferrimagnetic magnetite and antiferromagnetic hematite in the dust-enriched horizon, and the diamagnetic behaviour of the reference layer consisting of 'pure' snow. The samples recorded the presence of geogenic elements such as Al, Fe, Mn, and Ti, anthropogenic elements such as As, Co, Cr, Cu, Ni, Pb, and Zn, and nutrients including Ca and K. The total concentrations of geogenic elements, nutrients, and anthropogenic elements in the snow samples with deposited Saharan dust were, respectively, >3700, >320, and >110 times greater than in the samples without Saharan dust. These findings may serve as reference data for a variety of environmental magnetic studies.
Trvalý link: https://hdl.handle.net/11104/0335057