10.48380/DGGV-NAVD-0269
Toxicological effects of rare earth elements to photosynthetic organisms
Suárez, Edith Padilla
Edith Padilla
Suárez
Department of Biology, University of Naples Federico II
University of Naples Federico II
Siciliano, Antonietta
Antonietta
Siciliano
Department of Biology, University of Naples Federico II
University of Naples Federico II
Guida, Marco
Marco
Guida
Department of Biology, University of Naples Federico II
Centro Servizi Metrologici e Tecnologici Avanzati (CeSMA)
University of Naples Federico II
Pagano, Giovanni
Giovanni
Pagano
Centro Servizi Metrologici e Tecnologici Avanzati (CeSMA)
Trifuoggi, Marco
Marco
Trifuoggi
University of Naples Federico II
Department of Chemical Sciences, University of Naples Federico II
Serafini, Sara
Sara
Serafini
Department of Biology, University of Naples Federico II
University of Naples Federico II
Galdiero, Emilia
Emilia
Galdiero
Department of Biology, University of Naples Federico II
University of Naples Federico II
Tommasi, Franca
Franca
Tommasi
Department of Biology, Università degli Studi di Bari Aldo Moro
University of Bari Aldo Moro
Lofrano, Giusy
Giusy
Lofrano
Centro Servizi Metrologici e Tecnologici Avanzati (CeSMA)
Gjata, Isidora
Isidora
Gjata
Department of Biology, Università degli Studi di Bari Aldo Moro
University of Bari Aldo Moro
Brouziotis, Antonios Apostolos
Antonios Apostolos
Brouziotis
University of Naples Federico II
Department of Biology, University of Naples Federico II
Department of Chemical Sciences, University of Naples Federico II
Liguori, Renato
Renato
Liguori
Department of Biology, Università degli Studi di Bari Aldo Moro
University of Bari Aldo Moro
Libralato, Giovanni
Giovanni
Libralato
Department of Biology, University of Naples Federico II
University of Naples Federico II
Abstract
2021
en
Rare earth elements (REEs) have become a key component in many technological applications. Due to the rapid increase in their use, the potential environmental exposure has also expanded. However, the effects on the ecosystem have not been yet thoroughly evaluated, leaving many knowledge gaps. To evaluate the effects of REEs, a set of experiments with acute and chronic exposure were performed on photosynthetic organisms.
The effects of acute exposure of four elements (cerium, gadolinium, lanthanum and neodymium) in two set upsexperimental scenarios with different pH values (6 and 4), was evaluated on three testing species: Raphidocelis subcapitata, Lepidium sativum and Vicia faba. In the rResults obtained in the acute exposure, a higher toxicity at pH 4 was observedindicated higher toxicity levels, which could be explained by a higher bioavailability of the elements. From the relative calculated median effective concentrations (EC50s), R. subcapitata was the most sensitive species, followed by L. sativum and lastly, V. faba.
Further investigations focused on , the chronic exposure of lanthanum and cerium was evaluated on Raphidocelis subcapitata. After a 28 days exposure, results showed a growth inhibition effects effect and increasing a bioaccumulation (from day 7 to 28) with effect at the end of the test. Moreover, endpoints regardedfluctuating values of the relative as biomarkers of stress (ROS, CAT, and SOD)., fluctuated during the sampling days during the exposure (day 7, 14, 21 and 28).
Italy
Deutsche Geologische Gesellschaft - Geologische Vereinigung e.V. (DGGV)
2021