Methyl and total mercury found in two man-made Amazonian Reservoirs
Autor(a) principal: | |
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Data de Publicação: | 2009 |
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=S0103-50532009000600021 |
Resumo: | Methylmercury (MeHg) and total mercury (Hg) concentrations were determined in water and fish samples from two reservoirs within Brazilian Amazon that present different limnological and ecological characteristics. Tucuruí, a mesotrophic reservoir with clear water, presented higher Hg in water samples (12.7 ± 8.4 ng L-1) than Balbina (2.2 ± 0.5 ng L-1), an oligotrophic reservoir with black water. Neither Cichla spp. (piscivorous fish), nor Geophagus surinamensis (omnivorous fish) presented significant differences in length-normalized concentrations of MeHg and Hg in muscle, between both reservoirs. MeHg and Hg increased with body weight and standard length of Cichla spp., and also with the trophic level on the food chain. The Hg bioconcentration factor (BCF) increased with the trophic level of the fish, from the omnivorous (10³) to piscivorous fish (10(4)). Fish from Balbina, an ecosystem naturally rich in dissolved organic matter, presented the highest BCF. Not only the different limnological and ecological characteristics but also the feeding habits seem to influence the mercury concentration in fish. |
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Methyl and total mercury found in two man-made Amazonian Reservoirslimnological and ecological characteristicshydroelectric reservoirsbioconcentration factorabiotic and biotic samplestotal and methyl mercuryMethylmercury (MeHg) and total mercury (Hg) concentrations were determined in water and fish samples from two reservoirs within Brazilian Amazon that present different limnological and ecological characteristics. Tucuruí, a mesotrophic reservoir with clear water, presented higher Hg in water samples (12.7 ± 8.4 ng L-1) than Balbina (2.2 ± 0.5 ng L-1), an oligotrophic reservoir with black water. Neither Cichla spp. (piscivorous fish), nor Geophagus surinamensis (omnivorous fish) presented significant differences in length-normalized concentrations of MeHg and Hg in muscle, between both reservoirs. MeHg and Hg increased with body weight and standard length of Cichla spp., and also with the trophic level on the food chain. The Hg bioconcentration factor (BCF) increased with the trophic level of the fish, from the omnivorous (10³) to piscivorous fish (10(4)). Fish from Balbina, an ecosystem naturally rich in dissolved organic matter, presented the highest BCF. Not only the different limnological and ecological characteristics but also the feeding habits seem to influence the mercury concentration in fish.Sociedade Brasileira de Química2009-01-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersiontext/htmlhttp://old.scielo.br/scielo.php?script=sci_arttext&pid=S0103-50532009000600021Journal of the Brazilian Chemical Society v.20 n.6 2009reponame:Journal of the Brazilian Chemical Society (Online)instname:Sociedade Brasileira de Química (SBQ)instacron:SBQ10.1590/S0103-50532009000600021info:eu-repo/semantics/openAccessKehrig,Helena A.Palermo,Elisabete F. A.Seixas,Tércia G.Santos,Helder S. B.Malm,OlafAkagi,Hirokatsueng2009-08-04T00:00:00Zoai:scielo:S0103-50532009000600021Revistahttp://jbcs.sbq.org.brONGhttps://old.scielo.br/oai/scielo-oai.php||office@jbcs.sbq.org.br1678-47900103-5053opendoar:2009-08-04T00:00Journal of the Brazilian Chemical Society (Online) - Sociedade Brasileira de Química (SBQ)false |
dc.title.none.fl_str_mv |
Methyl and total mercury found in two man-made Amazonian Reservoirs |
title |
Methyl and total mercury found in two man-made Amazonian Reservoirs |
spellingShingle |
Methyl and total mercury found in two man-made Amazonian Reservoirs Kehrig,Helena A. limnological and ecological characteristics hydroelectric reservoirs bioconcentration factor abiotic and biotic samples total and methyl mercury |
title_short |
Methyl and total mercury found in two man-made Amazonian Reservoirs |
title_full |
Methyl and total mercury found in two man-made Amazonian Reservoirs |
title_fullStr |
Methyl and total mercury found in two man-made Amazonian Reservoirs |
title_full_unstemmed |
Methyl and total mercury found in two man-made Amazonian Reservoirs |
title_sort |
Methyl and total mercury found in two man-made Amazonian Reservoirs |
author |
Kehrig,Helena A. |
author_facet |
Kehrig,Helena A. Palermo,Elisabete F. A. Seixas,Tércia G. Santos,Helder S. B. Malm,Olaf Akagi,Hirokatsu |
author_role |
author |
author2 |
Palermo,Elisabete F. A. Seixas,Tércia G. Santos,Helder S. B. Malm,Olaf Akagi,Hirokatsu |
author2_role |
author author author author author |
dc.contributor.author.fl_str_mv |
Kehrig,Helena A. Palermo,Elisabete F. A. Seixas,Tércia G. Santos,Helder S. B. Malm,Olaf Akagi,Hirokatsu |
dc.subject.por.fl_str_mv |
limnological and ecological characteristics hydroelectric reservoirs bioconcentration factor abiotic and biotic samples total and methyl mercury |
topic |
limnological and ecological characteristics hydroelectric reservoirs bioconcentration factor abiotic and biotic samples total and methyl mercury |
description |
Methylmercury (MeHg) and total mercury (Hg) concentrations were determined in water and fish samples from two reservoirs within Brazilian Amazon that present different limnological and ecological characteristics. Tucuruí, a mesotrophic reservoir with clear water, presented higher Hg in water samples (12.7 ± 8.4 ng L-1) than Balbina (2.2 ± 0.5 ng L-1), an oligotrophic reservoir with black water. Neither Cichla spp. (piscivorous fish), nor Geophagus surinamensis (omnivorous fish) presented significant differences in length-normalized concentrations of MeHg and Hg in muscle, between both reservoirs. MeHg and Hg increased with body weight and standard length of Cichla spp., and also with the trophic level on the food chain. The Hg bioconcentration factor (BCF) increased with the trophic level of the fish, from the omnivorous (10³) to piscivorous fish (10(4)). Fish from Balbina, an ecosystem naturally rich in dissolved organic matter, presented the highest BCF. Not only the different limnological and ecological characteristics but also the feeding habits seem to influence the mercury concentration in fish. |
publishDate |
2009 |
dc.date.none.fl_str_mv |
2009-01-01 |
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=S0103-50532009000600021 |
url |
http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0103-50532009000600021 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
10.1590/S0103-50532009000600021 |
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.20 n.6 2009 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 |
_version_ |
1750318170168623104 |