TY - JOUR N2 - The chemical composition of bulk deposition is an important aspect of assessing ambient air pollution. It contributes significantly to the removal of pollutants from the atmosphere and their transfer to other ecosystems. Thus, it is a reliable determinant of environmental chemistry. Therefore, bulk deposition can be considered useful for tracking the migration path of substances from different sources. The aim of the study carried out at five measurement points in Zabrze and Bytom was to assess the content of selected physico-chemical parameters in bulk deposition. Samples were collected continuously from November 2019 to November 2020. In the collected samples the following were determined: COD, pH, conductivity, dissolved organic carbon, inorganic carbon and total carbon; inorganic anions (Cl-, SO42-, NO3-, NO2-, Br-, PO43-) and cations (Li+, Mg2+, Ca2+, Na+, K+, NH4+), metals and metalloids (Mn, Ni, Co, Cu, Zn, As, Cd, Pb, Cr, and Fe), and carboxylic acids (formic, acetic, oxalic). The obtained test results were statistically processed using Excel, and the normality of data distribution was verified by Shapiro-Wilk test. The results show that pollutants transported in the atmosphere and introduced with precipitation in the Zabrze and Bytom areas are a significant source of area pollution of the region. L1 - http://czasopisma.pan.pl/Content/123572/PDF/AEP(11)106_116.pdf L2 - http://czasopisma.pan.pl/Content/123572 PY - 2022 IS - 2 EP - 116 DO - 10.24425/aep.2022.141784 KW - metals, KW - Upper Silesia, KW - ions, metalloids, KW - bulk deposition, KW - carboxylic acids A1 - Michalski, Rajmund A1 - Pecyna-Utylska, Paulina PB - Polish Academy of Sciences VL - 48 DA - 29.06.2022 T1 - Chemical characterization of bulk depositions in two cities of Upper Silesia (Zabrze, Bytom), Poland. Case study SP - 106 UR - http://czasopisma.pan.pl/dlibra/publication/edition/123572 T2 - Archives of Environmental Protection ER -