Mutual relations between PAHs derived from atmospheric deposition, enzymatic activity, and humic substances in soils of differently urbanized areas

• DOI: 10.1007/s11368-018-1937-z
• Publication Date: 2018-02-09T04:47:47Z
• Authors: Elżbieta J. Bieli...; Barbara Futa; Aleksandra Ukalsk...; Jerzy Weber; Szymon Chmielewski; Sylwia Wesołowska; Agnieszka Mocek-P...; Krzysztof Patkowski; Lilla Mielnik
• Keywords: Humus; Deposition

The aim of this study was to determine the mutual relations between polycyclic aromatic hydrocarbons (PAHs) originated from atmospheric emissions and enzymatic activity humic substances in soils at differently urbanized area, on an example Lublin city, east Poland. chosen areas represented three environments: old tenement houses modern residential blocks, mixture different building rural landscape, typical environment with smallholding farms, respectively. On each urban, suburban, areas, one representative plot fallow lands classified as luvisol derived loess. soil samples were collected top 25 cm layer. following properties determined: pH, organic carbon, total nitrogen, fulvic acids, PAHs content (14 US EPA list), activities enzymes: dehydrogenases, acid phosphatase, alkane protease, urease. Higher contents C N found samples. share similar all investigated, ranging 19.38 25.27%, while values differ significantly urban areas. indicated much lower acids (9.78–10.99%) than those (29.02–29.32%). Consequently, CHA:CFA ratio approximately two times higher soil. results showed that both rate humification alkaline proteases increased sequence: < suburban rural. increase affect other properties. phenanthrene/anthracene fluoranthene/pyrene ratios pointed coal combustion principal source investigated soils. PAH area inhibit processes proteases.