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Título: | Mechanistic simulation of bioconcentration kinetics of waterborne Cd, Ag, Pd, and Pt in the zebra mussel Dreissena polymorpha |
Autor: | Le, T. T. Yen; García, Miriam R. CSIC ORCID ; Grabner, Daniel; Nachev, Milen; Balsa-Canto, Eva CSIC ORCID ; Hendriks, A. Jan; Zimmermann, S.; Sures, Bernd | Palabras clave: | Platinum Trace metals Bivalves Bioconcentration Covalent index Mechanistic model |
Fecha de publicación: | 2020 | Editor: | Elsevier | Citación: | Chemosphere 242: 124967 (2020) | Resumen: | Mechanistic models based on chemical properties of metals and body size have received substantial attention for their potential application to various metals and to different conditions without required calibration. This advantage has been demonstrated for a number of metals, such as Cd and Ag. However, the capacity of metal-specific chemical properties to explain variations in the accumulation for platinum-group elements (PGEs) has not been investigated yet, although emission of these metals is of increasing concern. Once being released, PGEs exist in the environment in mixtures with other metals. The present study attempted to model the accumulation of Pd and Pt in mixtures with Ag and Cd in the zebra mussel (Dreissena polymorpha) from the aqueous phase; and to investigate the potential application of mechanistic models to Pd and Pt. The present study showed statistically insignificant differences in metal accumulation among size groups in a narrow range of shell length (16–22 mm). Kinetic models could simulate well the accumulation of Cd, Ag, and Pt when metal-specific responses of zebra mussels are taken into consideration. These responses include enhanced immobilisation as a detoxifying mechanism and exchange between soft tissues and shells via the extrapallial fluid. Environmental conditions, e.g. the presence of abiotic ligands such as chloride, might also play an important role in metal accumulation. Significant relationships between the absorption efficiency and the covalent index indicate the potential application of mechanistic models based on this chemical property to Pt | Descripción: | 13 pages, 3 tables, 4 figures | Versión del editor: | https://doi.org/10.1016/j.chemosphere.2019.124967 | URI: | http://hdl.handle.net/10261/201043 | DOI: | 10.1016/j.chemosphere.2019.124967 | ISSN: | 0045-6535 | E-ISSN: | 1879-1298 |
Aparece en las colecciones: | (IIM) Artículos |
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