Título: | OCCURRENCE OF POLYCHLORINATED BIPHENYLS (PCBS) AND POLYBROMINATED DIPHENYLETHERS (PBDES) IN DIFFERENT SPECIES OF FISH FROM ILHA GRANDE BAY | ||||||||||||||||||||||||||||||||||||||||
Autor: |
RICARDO CAVALCANTI LAVANDIER |
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Colaborador(es): |
ISABEL MARIA NETO DA SILVA MOREIRA - Orientador ROSALINDA CARMELA MONTONE - Coorientador |
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Catalogação: | 02/AGO/2011 | Língua(s): | PORTUGUESE - BRAZIL |
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Tipo: | TEXT | Subtipo: | THESIS | ||||||||||||||||||||||||||||||||||||||
Notas: |
[pt] Todos os dados constantes dos documentos são de inteira responsabilidade de seus autores. Os dados utilizados nas descrições dos documentos estão em conformidade com os sistemas da administração da PUC-Rio. [en] All data contained in the documents are the sole responsibility of the authors. The data used in the descriptions of the documents are in conformity with the systems of the administration of PUC-Rio. |
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Referência(s): |
[pt] https://www.maxwell.vrac.puc-rio.br/projetosEspeciais/ETDs/consultas/conteudo.php?strSecao=resultado&nrSeq=17894&idi=1 [en] https://www.maxwell.vrac.puc-rio.br/projetosEspeciais/ETDs/consultas/conteudo.php?strSecao=resultado&nrSeq=17894&idi=2 |
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DOI: | https://doi.org/10.17771/PUCRio.acad.17894 | ||||||||||||||||||||||||||||||||||||||||
Resumo: | |||||||||||||||||||||||||||||||||||||||||
Polychlorinated biphenyls (PCBs) and Polybrominated Diphenyls Ethers (PBDEs) are
two highly lipophilic classes of persistent organic pollutants (POPs) able to resist
degradation and with the ability to bioaccumulate through the food chain. PCBs were
primarily used as insulating fluids in capacitors and transformers, as well as in several
electrical equipments. The high levels of these pollutants in the environment can occur
due to several factors, among which the disposal of obsolete electronic equipment. Both
pollutants are endocrine disrupters that can cause reproductive alterations. They are
neurotoxic and have carcinogenic effects. Humans, by occupying the top of food chain,
are subject to a high risk of contamination by these compounds. In this study, we
determined the levels of PBDEs and PCBs in different fish species from the Ilha Grande
Bay, located in the southern state of Rio de Janeiro, Brazil. PCBs were the predominant
pollutants and PBDEs levels were below the limit of quantification. PCBs concentrations
were found in the different tissues of fish at concentrations ranging from 2.29 to 27.60 ng
g(-1) wet wt in muscles and from 3.41 to 34.22 ng g(-1) wet wt in livers. PCB-87 was the
major congener detected, with a mean concentration of 34.22 ng g(-1) wet wt in croaker
samples. Correlations were established between the concentration of PCBs and biometric
variables of the fish individuals, such as length and fat content, and a statistical variation
due seasonality was also observed.
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