Assessment of Pollutant Load and Potential Impact of the Snowpack in Brăila Municipality
Abstract
Urban snowpack represents a highly effective matrix for monitoring atmospheric deposition, as it has the capacity to accumulate pollutants originating from anthropogenic activities during the cold season. The present study aims to assess the contamination levels of snow collected from different functional areas of the Brăila municipality, as well as to estimate the potential impact of pollutants on soil and surface waters during the melting period. Snow samples were collected from areas characterized by intense road traffic, residential zones, industrial sectors, and green spaces, in order to highlight the spatial variability of contaminants. Laboratory analyses included the determination of physicochemical parameters (pH, total dissolved solids, and electrical conductivity), major ionic species (Cl⁻, SO₄²⁻, NO₃⁻, NH₄⁺, Ca²⁺, Mg²⁺), and selected heavy metals (Pb, Cd, Fe), which are relevant indicators for identifying sources of urban pollution. The assessment of pollution levels was carried out using specific indices, such as the contamination factor and the pollution load index. The obtained results highlight the influence of anthropogenic activities on the chemical composition of urban snow and emphasize its role as a vector for pollutant transfer to soils and drainage systems during snowmelt. Ultimately, this study contributes to a better understanding of seasonal urban pollution processes and provides a scientific basis for the development of sustainable environmental management measures.
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References
[2]. Rangel-Alvarado R., et al., Snow particles physiochemistry: feedback on air quality, climate change, and human health, Environmental Science: Atmospheres, 2, p. 891-920, 2022.
[3]. Kuoppamäki K., et al., Urban snow indicates pollution originating from road traffic, Environmental Pollution, 195, p. 56-63, 2014.
[4]. Vijayan A., et al., Traffic-related metals in urban snow cover: A review of the literature data and the feasibility of filling gaps by field data collection, Science of the Total Environment, 920, 170640, 2024.
[5]. Kozhevnikov A. Y., et al., Dynamics of pollutants accumulation in the snow of an urban agglomeration, Polar Science, 2024.
[6]. ***, Climate data for Brăila, Romania, Climate-Data.org (n.d.), https://en.climate-data.org/europe/romania/braila/braila-480/.
[7]. ***, Harta digitală a municipiului Brăila, Primăria Municipiului Brăila, (n.d.), https://braila-city.map2web.eu/.
[8]. ***, Acid rain and effects of acid rain, United States Environmental Protection Agency (n.d.), Available at: https://www.epa.gov/acidrain.
[9]. Jacob D. J., Introduction to atmospheric chemistry, Princeton University Press, 1999.
[10]. ***, Manual for the GAW precipitation chemistry programme, World Meteorological Organization, 2004.
[11]. ***, Legea apelor nr. 107/1996, privind utilizarea, protecția și gestionarea resurselor de apă.
[12]. ***, Ordinul nr. 161/2006, pentru aprobarea Normativului privind clasificarea calității apelor de suprafață în vederea stabilirii stării ecologice a corpurilor de apă.
[13]. Szklarek S., et al., The effects of road salt on freshwater ecosystems and solutions for mitigating chloride pollution: A review, Science of the Total Environment, 805, 150289, 2022.
[14]. Lu H., et al., Spatial heterogeneity of heavy metals contamination in urban road dust and associated human health risks, Land, 14(4), 754, 2025.
[15]. Ariyarathna T., et al., Distribution and sources of heavy metals in stormwater: Influence of land use in Camden, New Jersey, Land, 15(1), 154, 2026.
[16]. Alloway B. J., Heavy metals in soils: Trace metals and metalloids in soils and their bioavailability, Springer, 2013.
[17]. ***, Ordinul nr. 756/1997, pentru aprobarea reglementării privind evaluarea poluării mediului.
[18]. ***, NTPA-001/2005 privind stabilirea limitelor de încărcare cu poluanți a apelor uzate industriale și urbane la evacuarea în receptorii naturali, Monitorul Oficial al României, 2005.
[19]. ***, NTPA-002/2002 privind condițiile de evacuare a apelor uzate în rețelele de canalizare ale localităților, Monitorul Oficial al României, 2002.
