Naslov
The effect of coal ash and slag with enhanced content of naturally occurring radionuclides on Eisenia fetida

Autori
Nikolić, Josip ; Hackenberger Kutuzović, Davorka ; Skoko, Božena ; Hackenberger Kutuzović, Branimir ; Klobučar, Goran ; Vucić, Matej ; Štrok, Marko ; Rovan, Leja ; Kerčmar, Eva ; Prlić, Ivica

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

Izvornik
Abstracts XII International Symposium on Earthworm Ecology / - , 2022, 101-101

Skup
XII International Symposium on Earthworm Ecology

Mjesto i datum
Rennes, Francuska, 10.07.2022. - 15.07.2022

Vrsta sudjelovanja
Predavanje

Vrsta recenzije
Međunarodna recenzija

Ključne riječi
Radionuclide ; earthworm ; biomarker ; reproduction ; genotoxicity

Sažetak
Industrial residues and wastes with higher content of naturally occurring radionuclides represent a potential ecological risk to the biota residing in the vicinity of the disposal sites. Coal ash and slag landfills are widespread due to usage of coal as fuel in thermal power plants worldwide. Combustion of coal results in preconcentration of radionuclides naturally present in coal in its residual ash as well as the spread of the ash particles at greater distances. Earthworms represent one of the most important group of terrestrial organisms and are therefore often used in ecotoxicological studies. The aim of this study was to determine the influence of weathered coal ash and slag with enhanced content of radionuclides from uranium decay chain that were sampled in the area of the former chemical factory in Kaštela Bay (Croatia), on biochemical markers (protein, lipid and carbohydrate content, lipid peroxidation, GST and AChE activity), genotoxicity markers (Comet assay and micronucleus test), cytotoxicity (neutral red uptake assay) and reproduction of the earthworm Eisenia fetida. The results have shown that 28 days exposure to those substrates cause oxidative stress, genotoxic and cytotoxic effects and inhibit reproduction. Compared to the control samples, earthworms exposed to the coal ash had significantly higher activity concentrations of Po-210, a member of uranium decay chain and one of the most radiotoxic naturally occurring radionuclide. Coelomic fluid expression had no significant impact on the activity concentrations of Po-210 in earthworms, indicating that polonium is mostly deposited in the soft tissues.

Izvorni jezik
Engleski

Znanstvena područja
Kemija, Biologija

POVEZANOST RADA