Cadmium and Chromium Toxicity to Pseudokirchneriella subcapitata and Microcystis aeruginosa
Autor(a) principal: | |
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Data de Publicação: | 2012 |
Outros Autores: | , , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Brazilian Archives of Biology and Technology |
Texto Completo: | http://old.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132012000100020 |
Resumo: | The toxicity of cadmium and chromium to Pseudokirchneriella subcapitata and Microcystis aeruginosa was evaluated through algal growth rate during 96h exposure bioassays. Free metal ion concentrations were obtained using MINEQL+ 4.61 and used for IC50 determination. Metal accumulations by the microorganisms were determined and they were found to be dependent on the concentration of Cd2+ and Cr6+. IC50 for P. subcapitata were 0.60 µmol L-1 free Cd2+ and 20 µmol L-1 free Cr6+, while the IC50 values for M. aeruginosa were 0.01 µmol L-1 Cd2+ and 11.07 µmol L-1 Cr6+ . P. subcapitata accumulated higher metal concentrations (0.001 -0.05 µmol Cd mg-1 dry wt. and 0.001 -0.04 µmol Cr mg-1 dry wt) than the cyanobacteria (0.001 -0.01 µmol Cd mg-1 dry wt and 0.001 -0.02 µmol Cr mg-1 dry wt). Cadmium was more toxic than chromium to both the microorganisms. |
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Cadmium and Chromium Toxicity to Pseudokirchneriella subcapitata and Microcystis aeruginosaToxic effectsalgae sensitivitymetal accumulationIC50The toxicity of cadmium and chromium to Pseudokirchneriella subcapitata and Microcystis aeruginosa was evaluated through algal growth rate during 96h exposure bioassays. Free metal ion concentrations were obtained using MINEQL+ 4.61 and used for IC50 determination. Metal accumulations by the microorganisms were determined and they were found to be dependent on the concentration of Cd2+ and Cr6+. IC50 for P. subcapitata were 0.60 µmol L-1 free Cd2+ and 20 µmol L-1 free Cr6+, while the IC50 values for M. aeruginosa were 0.01 µmol L-1 Cd2+ and 11.07 µmol L-1 Cr6+ . P. subcapitata accumulated higher metal concentrations (0.001 -0.05 µmol Cd mg-1 dry wt. and 0.001 -0.04 µmol Cr mg-1 dry wt) than the cyanobacteria (0.001 -0.01 µmol Cd mg-1 dry wt and 0.001 -0.02 µmol Cr mg-1 dry wt). Cadmium was more toxic than chromium to both the microorganisms.Instituto de Tecnologia do Paraná - Tecpar2012-02-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersiontext/htmlhttp://old.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132012000100020Brazilian Archives of Biology and Technology v.55 n.1 2012reponame:Brazilian Archives of Biology and Technologyinstname:Instituto de Tecnologia do Paraná (Tecpar)instacron:TECPAR10.1590/S1516-89132012000100020info:eu-repo/semantics/openAccessRodgher,SuzeleiEspíndola,Evaldo Luiz GaetaSimões,Fernanda Cristina FonsecaTonietto,Alessandra Emanueleeng2012-03-29T00:00:00Zoai:scielo:S1516-89132012000100020Revistahttps://www.scielo.br/j/babt/https://old.scielo.br/oai/scielo-oai.phpbabt@tecpar.br||babt@tecpar.br1678-43241516-8913opendoar:2012-03-29T00:00Brazilian Archives of Biology and Technology - Instituto de Tecnologia do Paraná (Tecpar)false |
dc.title.none.fl_str_mv |
Cadmium and Chromium Toxicity to Pseudokirchneriella subcapitata and Microcystis aeruginosa |
title |
Cadmium and Chromium Toxicity to Pseudokirchneriella subcapitata and Microcystis aeruginosa |
spellingShingle |
Cadmium and Chromium Toxicity to Pseudokirchneriella subcapitata and Microcystis aeruginosa Rodgher,Suzelei Toxic effects algae sensitivity metal accumulation IC50 |
title_short |
Cadmium and Chromium Toxicity to Pseudokirchneriella subcapitata and Microcystis aeruginosa |
title_full |
Cadmium and Chromium Toxicity to Pseudokirchneriella subcapitata and Microcystis aeruginosa |
title_fullStr |
Cadmium and Chromium Toxicity to Pseudokirchneriella subcapitata and Microcystis aeruginosa |
title_full_unstemmed |
Cadmium and Chromium Toxicity to Pseudokirchneriella subcapitata and Microcystis aeruginosa |
title_sort |
Cadmium and Chromium Toxicity to Pseudokirchneriella subcapitata and Microcystis aeruginosa |
author |
Rodgher,Suzelei |
author_facet |
Rodgher,Suzelei Espíndola,Evaldo Luiz Gaeta Simões,Fernanda Cristina Fonseca Tonietto,Alessandra Emanuele |
author_role |
author |
author2 |
Espíndola,Evaldo Luiz Gaeta Simões,Fernanda Cristina Fonseca Tonietto,Alessandra Emanuele |
author2_role |
author author author |
dc.contributor.author.fl_str_mv |
Rodgher,Suzelei Espíndola,Evaldo Luiz Gaeta Simões,Fernanda Cristina Fonseca Tonietto,Alessandra Emanuele |
dc.subject.por.fl_str_mv |
Toxic effects algae sensitivity metal accumulation IC50 |
topic |
Toxic effects algae sensitivity metal accumulation IC50 |
description |
The toxicity of cadmium and chromium to Pseudokirchneriella subcapitata and Microcystis aeruginosa was evaluated through algal growth rate during 96h exposure bioassays. Free metal ion concentrations were obtained using MINEQL+ 4.61 and used for IC50 determination. Metal accumulations by the microorganisms were determined and they were found to be dependent on the concentration of Cd2+ and Cr6+. IC50 for P. subcapitata were 0.60 µmol L-1 free Cd2+ and 20 µmol L-1 free Cr6+, while the IC50 values for M. aeruginosa were 0.01 µmol L-1 Cd2+ and 11.07 µmol L-1 Cr6+ . P. subcapitata accumulated higher metal concentrations (0.001 -0.05 µmol Cd mg-1 dry wt. and 0.001 -0.04 µmol Cr mg-1 dry wt) than the cyanobacteria (0.001 -0.01 µmol Cd mg-1 dry wt and 0.001 -0.02 µmol Cr mg-1 dry wt). Cadmium was more toxic than chromium to both the microorganisms. |
publishDate |
2012 |
dc.date.none.fl_str_mv |
2012-02-01 |
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=S1516-89132012000100020 |
url |
http://old.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132012000100020 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
10.1590/S1516-89132012000100020 |
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 |
Instituto de Tecnologia do Paraná - Tecpar |
publisher.none.fl_str_mv |
Instituto de Tecnologia do Paraná - Tecpar |
dc.source.none.fl_str_mv |
Brazilian Archives of Biology and Technology v.55 n.1 2012 reponame:Brazilian Archives of Biology and Technology instname:Instituto de Tecnologia do Paraná (Tecpar) instacron:TECPAR |
instname_str |
Instituto de Tecnologia do Paraná (Tecpar) |
instacron_str |
TECPAR |
institution |
TECPAR |
reponame_str |
Brazilian Archives of Biology and Technology |
collection |
Brazilian Archives of Biology and Technology |
repository.name.fl_str_mv |
Brazilian Archives of Biology and Technology - Instituto de Tecnologia do Paraná (Tecpar) |
repository.mail.fl_str_mv |
babt@tecpar.br||babt@tecpar.br |
_version_ |
1750318274911928320 |