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001-es BibID:	BIBFORM126040
Első szerző:	Nagy Péter Tamás (vegyész)
Cím:	Study of heavy metal and nitrate pollution and mobility in Debrecen soils in model column experiments / Péter Tamás Nagy, Neha - Charuni Sewwandi, Tamás Magyar
Dátum:	2024
Megjegyzések:	Monitoring and regularly assessing urban soils is crucial due to their frequent contamination with various pollutants, particularly heavy metals like zinc (Zn) and copper (Cu) from industrial activities, as well as easily soluble nitrates resulting from agricultural practices. These contaminants accumulate in soils, presenting significant environmental and health risks. Heavy metals, for instance, can be absorbed by plants and enter the food chain, posing toxic threats to both humans and animals. While small amounts of zinc and copper are essential for plant and animal growth, their elevated concentrations can lead to toxicity. Debrecen plays a unique role in the Eastern Hungary region, sitting at the intersection of modern economic investments and traditional agricultural activities. This duality results in a mix of heavy metal pollution from industrial development and easily soluble, mobile compounds, such as nitrates, from agricultural practices. As a result, the soils in Debrecen are particularly susceptible to contamination from these sources, making it an important focus for our study. To explore these potential contaminants, we conducted model experiments investigating the migration of these pollutants in three different soil samples from the Debrecen area. The soils tested included a loamy sandy soil and two types of sandy loam soils. Experiment was set up at three soils with similar organic carbon content (between 0.8 and 1.1%) and pH (7.90 and 7.25) but different texture (78-54% sand and 22-46% of silt+clay, respectively). In our soil column leaching experiments, designed to simulate pollution, we used a pollutant solution with copper and zinc concentrations of 1 mg/L, 10 mg/L, and 100 mg/L and 1g/L, 5g/L, 10g/L for nitrate. Soil columns were prepared in triplicate, and the irrigation pattern simulated the average rainfall distribution of a typical summer month. The concentrations of copper and zinc in the soils were then measured using the ICP-OES method. Our findings revealed that the vertical migration of these pollutants within the soil columns varied significantly depending on the soil type and the concentration of contaminants applied. Specifically, it was observed that heavy metals, such as copper and zinc, introduced at the surface, began appearing in the deeper soil layers approximately one month later. This suggests that heavy metals applied at the surface can gradually percolate through the soil, posing a potential long-term risk to urban soils and possibly contributing to environmental degradation in urban settings. Soils were then analyzed at different depths and vertical concentration profiles were plotted. Overall, highest concentrations were measured in the upper layers for contaminants in the soil column with higher clay content (C), whereas vertical profiles were more uniform in that with lower clay content (S). The results of laboratory column experiments were used to validate solute transport models built-up in HYDRUS modeling environment. Based on the validated models, different scenarios had been considered with variable initial nitrogen concentration to predict the vertical nitrogen distribution in the investigated soil profiles. In conclusion, the study underscores the need for continuous monitoring of urban soils to mitigate the environmental and health risks posed by both industrial and agricultural contaminants.
ISBN:	978-615-5387-13-5
Tárgyszavak:	Agrártudományok Növénytermesztési és kertészeti tudományok előadáskivonat könyvrészlet
Megjelenés:	Budapest Soil Health Forum : Book of abstracts / ed. Nándor Csikós, Ágota Horel, Gergely Tóth, Zsófia Bakacsi. - p. 79. -
További szerzők:	Sewwandi, Charuni Magyar Tamás (1987-) (környezetmérnök)
Pályázati támogatás:	RRF-2.3.1-21-2022-00008 Egyéb
Internet cím:	Szerző által megadott URL Intézményi repozitóriumban (DEA) tárolt változat
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