Naslov
Comparison of geochemical data of river sediments influenced by industrial and agricultural runoff

Autori
Šariri, Sara ; Fiket, Željka ; Cvetković, Želimira ; Mijošek, Tatjana ; Kralj, Tomislav ; Valić, Damir ; Karamatić, Ivana ; Redžović, Zuzana ; Dragun, Zrinka ; Ivanković, Dušica ; Filipović Marijić, Vlatka

Vrsta, podvrsta i kategorija rada
Sažeci sa skupova, sažetak, znanstveni

Izvornik
Chem2Change, Environmental Chemistry towards Global Change, 2nd Online ACE Seminar on Chemistry and the Environment Led by Early-Career Scientists : Book of Abstracts / Niemi, Lydia ; Pap, Szabolcs ; Prosenc, Franja ; Šunta, Urška ; Mišíková, Frederika ; Krejčová, Anna ; Tykva, Marek ; Gajica, Gordana ; Savić, Slađana - Pardubice : University of Pardubice, 2022, 51-51

ISBN
978-80-7560-406-4

Skup
2nd Online ACE Seminar on Chemistry and the Environment Environmental Chemistry towards Global Change (Chem2Change 2022)

Mjesto i datum
Online, 15.03.2022. - 16.03.2022

Vrsta sudjelovanja
Predavanje

Vrsta recenzije
Nije recenziran

Ključne riječi
metals ; mineral oils ; karst ; Krka River

Sažetak
One of the main challenges of the modern world is the degradation of water quality due to human activities. The continuous interaction between sediment and water regulates the adsorption- desorption behaviour and thus the bioavailability of pollutants in rivers. The aim of this study was to compare the granulometric and geochemical characteristics of river sediments at five sites of the karst Krka River, which are under different anthropogenic impact: Krka River source (KRS, reference site), Krka River influenced by municipal wastewater (KRK-MWW), tributaries impacted by industrial effluents (Orašnica (TOR) and Kosovčica (TKO)) and by agricultural runoff (Butišnica (TBU)). After sampling the river sediments in July of 2021, carbonate content, particle size distribution, mineral oils, total organic carbon (TOC) and concentrations of Al, As, Ba, Cd, Cr, Cu, Fe, Mn, Ni, Pb, V and Zn were determined. Carbonate content ranged 22.8 (TOR) - 92.8% (KRK), while the predominant particle size fractions were sand and silt at all locations. The particle size distribution indicated multiple material sources for the studied sediments. The obtained characteristics of the sediments were typical for karst rivers, but some parameters indicated anthropogenic impact. Compared to the other sites, levels of mineral oils and common industrial metals were high (Al≥Fe>Zn>Mn>Ba) at TOR and TKO, while TOC was elevated at TKO and KRK. Geochemical data of sediment from the Krka River watercourse indicated more evidence for industrial impact than urban and agricultural. Since pollutants in the sediment from karst rivers can easily become bioavailable, strict protection plans and continuous monitoring of the Krka River are recommended.

Izvorni jezik
Engleski

Znanstvena područja
Kemija

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