Trace metals in estuarine organisms from a port region in southern Brazil: consumption risk to the local population

Autor: Sabrina Loise de Moraes Calado, Gustavo Souza Santos, Márcia Santos de Menezes, Fernando da Silva Carvalho Neto, Lilian Dalago Salgado
Rok vydání: 2020
Předmět:
Zdroj: Environmental Science and Pollution Research. 28:5283-5295
ISSN: 1614-7499
0944-1344
DOI: 10.1007/s11356-020-10836-7
Popis: Metal contamination is a threat to estuarine environments. They can accumulate in the food chain and cause toxic effects on aquatic organisms and human health. This study evaluated the concentrations of metals (Cd, Cr, Cu, Fe, Ni, Pb, and Zn) in aquatic organisms of Antonina Bay (southern Brazil) to analyze whether the metal concentrations were in accordance with Brazilian food legislation and estimate the human risk of local seafood consumption. All analyzed organisms (Centropomus parallelus, Mugil curema, Genidens genidens, Crassostrea brasiliana, and Xiphopenaeus kroyeri) showed traces of metals in their tissues with different metal concentrations among species. Metal concentrations were generally higher in oyster C. brasiliana, and biomagnification was not observed. Cr and Zn concentrations were above the limits established by legislation for all species in at least one sample. The concentrations of the other metals were within permitted levels. However, concentrations of Cd, Cr, Fe, and Zn posed a human consumption risk. In general, the C. brasiliana oyster presented the highest risk for human consumption, probably due to its filtering habit. Thus, the results indicated that metal concentrations in the tissues of the Antonina Bay seafood can pose a risk to human health, and this chronic exposure to metals also can cause toxic effects on local aquatic biota.
Databáze: OpenAIRE
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