Detection of rare-earth elements using fiddler crabs Leptuca leptodactyla (Crustacea: Ocypodidae) as bioindicators in mangroves on the coast of São Paulo, Brazil
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2020
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Science of the Total Environment
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Rare-earth elements have gained significant attention as they are currently widely used in high tech, chemical,
and pharmaceutical industries. Here we used the fiddler crabs Leptuca leptodactyla as bioindicators to verify
the presence of rare-earth elements in two mangrove areas of the Ubatuba, northern littoral of São Paulo state,
Brazil. The specimens were collected in the mangrove areas of the Tavares River and Quiririm-Puruba river system,
separated by season (dry and rainy). A total of 243 individuals were collected and analyzed. For determination
and quantification of the elements we used the instrumental neutron activation analysis (INAA) technique.
In both the dry and rainy season, the elements La, Ce, Sm, Eu, Tb, Yb and Scwere detected in samples of bothmangroves,
with La and Ce presenting higher concentrations. Samples from Tavares River mangrove had higher concentration
levels of rare-earth elements than those of the Quiririm-Puruba river system. That is probably due to
the central geographic position of the Tavares River in Ubatuba, which crosses a large portion of the city and receives
a great amount of sewage. On the other hand, the Quiririm-Puruba river system has less anthropogenic inputs,
thus, it receives much fewer rare-earth elements when compared to the Tavares River.
Como referenciar
LAVEZZO, BRUNA; KINOSHITA, ANGELA; FIGUEIREDO, ANA M.G.; PINHEIRO, MAYARA M.F.; SANTANA, WILLIAM. Detection of rare-earth elements using fiddler crabs Leptuca leptodactyla (Crustacea: Ocypodidae) as bioindicators in mangroves on the coast of São Paulo, Brazil. Science of the Total Environment, v. 738, p. 1-9, 2020. DOI: 10.1016/j.scitotenv.2020.139787. Disponível em: http://repositorio.ipen.br/handle/123456789/31447. Acesso em: 19 Apr 2024.
Esta referência é gerada automaticamente de acordo com as normas do estilo IPEN/SP (ABNT NBR 6023) e recomenda-se uma verificação final e ajustes caso necessário.