1. Bioavailability Assessment of Metals from the Coastal Sediments of Tropical Estuaries Based on Acid-Volatile Sulfide and Simultaneously Extracted Metals
- Author
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Ana Paula de Castro Rodrigues, Matheus Marinho Pereira, Aline Campos, Tássia Lins da Silva Quaresma, Rodrigo Pova, Thatianne Castro Vieira, Rút Amélia Diaz, Manuel Moreira, Denise Araripe, Christiane do Nascimento Monte, and Wilson Machado
- Subjects
AVS ,ecological risk ,adverse effect index ,Guanabara Bay ,Sepetiba Bay ,Environmental sciences ,GE1-350 ,Harbors and coast protective works. Coastal engineering. Lighthouses ,TC203-380 ,Geography (General) ,G1-922 - Abstract
Bioavailability assessment is important for evaluating the risks to the local biota, and the combined use of several ecological risk indices in eutrophic environments allows the best analysis of the local reality for decision-making. The relationship between acid volatile sulfide (AVS) concentrations and simultaneously extracted metals (SEM) allows us to infer the metal holding capacity of sediment, with the objective of evaluating the potential bioavailability of trace metals (Cd, Cu, Ni, Pb, and Zn) using ecological risk indices, such as the ΣSEM/AVS model and Adverse Effect Index (AEI), in surface sediments from Guanabara Bay and Sepetiba Bay, Brazil. AVS was determined using a colorimetric method and SEM with ICP-OES. In general, almost all sampling in Sepetiba Bay showed ΣSEM/AVS ratio values above 1. However, all results for the ΣSEM/AVS ratio found for the Guanabara Bay sediments were
- Published
- 2023
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