Tilapia (Oreochromis niloticus) as a Biondicator of Copper and Cadmium Toxicity. A Bioavailability Approach
Autor(a) principal: | |
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Data de Publicação: | 2017 |
Outros Autores: | , , , , , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Journal of the Brazilian Chemical Society (Online) |
Texto Completo: | http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0103-50532017000100143 |
Resumo: | The acute toxicity of copper and cadmium in Oreochromis niloticus was evaluated through a 96 h static assay. Precipitation of Cu and co-precipitation of Cd in the presence of Cu were noted, being indicative of differences in nominal and actual concentrations of metals. Under these conditions, LC50-96h was determined as 3.53 mg L-1Cu, 20.1 mg L-1 Cd and 1.36 mg L-1 (Cu + Cd). Besides the quantitative determinations of total dissolved metals in water, considerations on Cd/Cu interactions in aquatic media were presented, allowing the assessment for metals speciation. Data revealed that alkalinity, hardness, dissolved organic carbon and formation of inorganic complexes reduce metal availabilities, mainly in relation to Cu. In spite of this, the LC50 for Cd was significantly reduced in the presence of Cu, matching environmental realistic values. Based on simulated fate of metals, hardness may impair a reduction of 18 and 2% in metal activities, respectively to Cu and Cd. |
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Tilapia (Oreochromis niloticus) as a Biondicator of Copper and Cadmium Toxicity. A Bioavailability ApproachOreochromis niloticusmetals acute toxicitybioindicatorchemical speciationbioavailabilityThe acute toxicity of copper and cadmium in Oreochromis niloticus was evaluated through a 96 h static assay. Precipitation of Cu and co-precipitation of Cd in the presence of Cu were noted, being indicative of differences in nominal and actual concentrations of metals. Under these conditions, LC50-96h was determined as 3.53 mg L-1Cu, 20.1 mg L-1 Cd and 1.36 mg L-1 (Cu + Cd). Besides the quantitative determinations of total dissolved metals in water, considerations on Cd/Cu interactions in aquatic media were presented, allowing the assessment for metals speciation. Data revealed that alkalinity, hardness, dissolved organic carbon and formation of inorganic complexes reduce metal availabilities, mainly in relation to Cu. In spite of this, the LC50 for Cd was significantly reduced in the presence of Cu, matching environmental realistic values. Based on simulated fate of metals, hardness may impair a reduction of 18 and 2% in metal activities, respectively to Cu and Cd.Sociedade Brasileira de Química2017-01-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersiontext/htmlhttp://old.scielo.br/scielo.php?script=sci_arttext&pid=S0103-50532017000100143Journal of the Brazilian Chemical Society v.28 n.1 2017reponame:Journal of the Brazilian Chemical Society (Online)instname:Sociedade Brasileira de Química (SBQ)instacron:SBQ10.5935/0103-5053.20160157info:eu-repo/semantics/openAccessSilva,Maria A.Motta,Tatiana C. S.Tintor,Diogo B.Dourado,Thiago A.Alcântara,Amanda L.Menegário,Amauri A.Ferreira,José R.eng2017-01-05T00:00:00Zoai:scielo:S0103-50532017000100143Revistahttp://jbcs.sbq.org.brONGhttps://old.scielo.br/oai/scielo-oai.php||office@jbcs.sbq.org.br1678-47900103-5053opendoar:2017-01-05T00:00Journal of the Brazilian Chemical Society (Online) - Sociedade Brasileira de Química (SBQ)false |
dc.title.none.fl_str_mv |
Tilapia (Oreochromis niloticus) as a Biondicator of Copper and Cadmium Toxicity. A Bioavailability Approach |
title |
Tilapia (Oreochromis niloticus) as a Biondicator of Copper and Cadmium Toxicity. A Bioavailability Approach |
spellingShingle |
Tilapia (Oreochromis niloticus) as a Biondicator of Copper and Cadmium Toxicity. A Bioavailability Approach Silva,Maria A. Oreochromis niloticus metals acute toxicity bioindicator chemical speciation bioavailability |
title_short |
Tilapia (Oreochromis niloticus) as a Biondicator of Copper and Cadmium Toxicity. A Bioavailability Approach |
title_full |
Tilapia (Oreochromis niloticus) as a Biondicator of Copper and Cadmium Toxicity. A Bioavailability Approach |
title_fullStr |
Tilapia (Oreochromis niloticus) as a Biondicator of Copper and Cadmium Toxicity. A Bioavailability Approach |
title_full_unstemmed |
Tilapia (Oreochromis niloticus) as a Biondicator of Copper and Cadmium Toxicity. A Bioavailability Approach |
title_sort |
Tilapia (Oreochromis niloticus) as a Biondicator of Copper and Cadmium Toxicity. A Bioavailability Approach |
author |
Silva,Maria A. |
author_facet |
Silva,Maria A. Motta,Tatiana C. S. Tintor,Diogo B. Dourado,Thiago A. Alcântara,Amanda L. Menegário,Amauri A. Ferreira,José R. |
author_role |
author |
author2 |
Motta,Tatiana C. S. Tintor,Diogo B. Dourado,Thiago A. Alcântara,Amanda L. Menegário,Amauri A. Ferreira,José R. |
author2_role |
author author author author author author |
dc.contributor.author.fl_str_mv |
Silva,Maria A. Motta,Tatiana C. S. Tintor,Diogo B. Dourado,Thiago A. Alcântara,Amanda L. Menegário,Amauri A. Ferreira,José R. |
dc.subject.por.fl_str_mv |
Oreochromis niloticus metals acute toxicity bioindicator chemical speciation bioavailability |
topic |
Oreochromis niloticus metals acute toxicity bioindicator chemical speciation bioavailability |
description |
The acute toxicity of copper and cadmium in Oreochromis niloticus was evaluated through a 96 h static assay. Precipitation of Cu and co-precipitation of Cd in the presence of Cu were noted, being indicative of differences in nominal and actual concentrations of metals. Under these conditions, LC50-96h was determined as 3.53 mg L-1Cu, 20.1 mg L-1 Cd and 1.36 mg L-1 (Cu + Cd). Besides the quantitative determinations of total dissolved metals in water, considerations on Cd/Cu interactions in aquatic media were presented, allowing the assessment for metals speciation. Data revealed that alkalinity, hardness, dissolved organic carbon and formation of inorganic complexes reduce metal availabilities, mainly in relation to Cu. In spite of this, the LC50 for Cd was significantly reduced in the presence of Cu, matching environmental realistic values. Based on simulated fate of metals, hardness may impair a reduction of 18 and 2% in metal activities, respectively to Cu and Cd. |
publishDate |
2017 |
dc.date.none.fl_str_mv |
2017-01-01 |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/article |
dc.type.status.fl_str_mv |
info:eu-repo/semantics/publishedVersion |
format |
article |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0103-50532017000100143 |
url |
http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0103-50532017000100143 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
10.5935/0103-5053.20160157 |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
text/html |
dc.publisher.none.fl_str_mv |
Sociedade Brasileira de Química |
publisher.none.fl_str_mv |
Sociedade Brasileira de Química |
dc.source.none.fl_str_mv |
Journal of the Brazilian Chemical Society v.28 n.1 2017 reponame:Journal of the Brazilian Chemical Society (Online) instname:Sociedade Brasileira de Química (SBQ) instacron:SBQ |
instname_str |
Sociedade Brasileira de Química (SBQ) |
instacron_str |
SBQ |
institution |
SBQ |
reponame_str |
Journal of the Brazilian Chemical Society (Online) |
collection |
Journal of the Brazilian Chemical Society (Online) |
repository.name.fl_str_mv |
Journal of the Brazilian Chemical Society (Online) - Sociedade Brasileira de Química (SBQ) |
repository.mail.fl_str_mv |
||office@jbcs.sbq.org.br |
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1750318179141287936 |