Synchronous-scan fluorescence and the complexation of copper (II) ions by humic substances

Detalhes bibliográficos
Autor(a) principal: Lombardi,Ana T
Data de Publicação: 1997
Outros Autores: Jardim,Wilson F
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=S0103-50531997000400004
Resumo: Two fluorescence bands were detected using synchronous-scan fluorescence on samples of terrestrially derived humic substances (lex/lem 380/398, 440/458 nm) without the addition of copper. A third band (lex/lem 502/520 nm) was detected after severe quenching of the second band (lex/lem 440/458 nm) caused by additions of copper. A more energetic band (lex/lem 333/351 nm) is present in marine DOM, but absent in the terrestrial material. The effects of copper on both the intensity and shape of the synchronous-scan fluorescence spectra and this technique’s potential use as a tracer are discussed.
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spelling Synchronous-scan fluorescence and the complexation of copper (II) ions by humic substancesfluorescencehumic substancesquenchingTwo fluorescence bands were detected using synchronous-scan fluorescence on samples of terrestrially derived humic substances (lex/lem 380/398, 440/458 nm) without the addition of copper. A third band (lex/lem 502/520 nm) was detected after severe quenching of the second band (lex/lem 440/458 nm) caused by additions of copper. A more energetic band (lex/lem 333/351 nm) is present in marine DOM, but absent in the terrestrial material. The effects of copper on both the intensity and shape of the synchronous-scan fluorescence spectra and this technique’s potential use as a tracer are discussed.Sociedade Brasileira de Química1997-01-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersiontext/htmlhttp://old.scielo.br/scielo.php?script=sci_arttext&pid=S0103-50531997000400004Journal of the Brazilian Chemical Society v.8 n.4 1997reponame:Journal of the Brazilian Chemical Society (Online)instname:Sociedade Brasileira de Química (SBQ)instacron:SBQ10.1590/S0103-50531997000400004info:eu-repo/semantics/openAccessLombardi,Ana TJardim,Wilson Feng2010-11-19T00:00:00Zoai:scielo:S0103-50531997000400004Revistahttp://jbcs.sbq.org.brONGhttps://old.scielo.br/oai/scielo-oai.php||office@jbcs.sbq.org.br1678-47900103-5053opendoar:2010-11-19T00:00Journal of the Brazilian Chemical Society (Online) - Sociedade Brasileira de Química (SBQ)false
dc.title.none.fl_str_mv Synchronous-scan fluorescence and the complexation of copper (II) ions by humic substances
title Synchronous-scan fluorescence and the complexation of copper (II) ions by humic substances
spellingShingle Synchronous-scan fluorescence and the complexation of copper (II) ions by humic substances
Lombardi,Ana T
fluorescence
humic substances
quenching
title_short Synchronous-scan fluorescence and the complexation of copper (II) ions by humic substances
title_full Synchronous-scan fluorescence and the complexation of copper (II) ions by humic substances
title_fullStr Synchronous-scan fluorescence and the complexation of copper (II) ions by humic substances
title_full_unstemmed Synchronous-scan fluorescence and the complexation of copper (II) ions by humic substances
title_sort Synchronous-scan fluorescence and the complexation of copper (II) ions by humic substances
author Lombardi,Ana T
author_facet Lombardi,Ana T
Jardim,Wilson F
author_role author
author2 Jardim,Wilson F
author2_role author
dc.contributor.author.fl_str_mv Lombardi,Ana T
Jardim,Wilson F
dc.subject.por.fl_str_mv fluorescence
humic substances
quenching
topic fluorescence
humic substances
quenching
description Two fluorescence bands were detected using synchronous-scan fluorescence on samples of terrestrially derived humic substances (lex/lem 380/398, 440/458 nm) without the addition of copper. A third band (lex/lem 502/520 nm) was detected after severe quenching of the second band (lex/lem 440/458 nm) caused by additions of copper. A more energetic band (lex/lem 333/351 nm) is present in marine DOM, but absent in the terrestrial material. The effects of copper on both the intensity and shape of the synchronous-scan fluorescence spectra and this technique’s potential use as a tracer are discussed.
publishDate 1997
dc.date.none.fl_str_mv 1997-01-01
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=S0103-50531997000400004
url http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0103-50531997000400004
dc.language.iso.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv 10.1590/S0103-50531997000400004
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.8 n.4 1997
reponame:Journal of the Brazilian Chemical Society (Online)
instname:Sociedade Brasileira de Química (SBQ)
instacron:SBQ
instname_str Sociedade Brasileira de Química (SBQ)
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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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