Non-aromatic hydrocarbons in recent sediments of Sepetiba and Ilha Grande Bays, Brazil
Autor(a) principal: | |
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Data de Publicação: | 2008 |
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=S0103-50532008000300020 |
Resumo: | An investigation was conducted in Ilha Grande and Sepetiba Bays aiming at identifying the nature of non-aromatic hydrocarbons (NAH) in surface sediments. NAH concentrations ranged from 2.5 µg g-1 to 193.8 µg g-1 of which the major fraction (53 to 93%) was composed by unresolved complex mixture (UMC). In most samples n-alkane distribution was dominated by compounds of odd carbon number showing maxima in nC29 and nC31. Mono-olefins were at low concentrations and the polyolefins including highly branched isoprenoids and squalene varied from 0.099 µg g-1 to 1.387 µg g-1 with lower values relative to NAH appearing in areas of strong terrestrial and anthropogenic influence. Hopanes between C27 and C33 were observed in all samples with the predominant configuration 17a(H),21b(H), characteristic of a petrogenic origin. |
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Non-aromatic hydrocarbons in recent sediments of Sepetiba and Ilha Grande Bays, Brazilnon-aromatic hydrocarbonssedimentsIlha Grande BaySepetiba BayAn investigation was conducted in Ilha Grande and Sepetiba Bays aiming at identifying the nature of non-aromatic hydrocarbons (NAH) in surface sediments. NAH concentrations ranged from 2.5 µg g-1 to 193.8 µg g-1 of which the major fraction (53 to 93%) was composed by unresolved complex mixture (UMC). In most samples n-alkane distribution was dominated by compounds of odd carbon number showing maxima in nC29 and nC31. Mono-olefins were at low concentrations and the polyolefins including highly branched isoprenoids and squalene varied from 0.099 µg g-1 to 1.387 µg g-1 with lower values relative to NAH appearing in areas of strong terrestrial and anthropogenic influence. Hopanes between C27 and C33 were observed in all samples with the predominant configuration 17a(H),21b(H), characteristic of a petrogenic origin.Sociedade Brasileira de Química2008-01-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersiontext/htmlhttp://old.scielo.br/scielo.php?script=sci_arttext&pid=S0103-50532008000300020Journal of the Brazilian Chemical Society v.19 n.3 2008reponame:Journal of the Brazilian Chemical Society (Online)instname:Sociedade Brasileira de Química (SBQ)instacron:SBQ10.1590/S0103-50532008000300020info:eu-repo/semantics/openAccessFigueiredo,Luis H. M.Wagener,Angela de L. R.Dagaut,JacquesSaliot,Alaineng2008-05-27T00:00:00Zoai:scielo:S0103-50532008000300020Revistahttp://jbcs.sbq.org.brONGhttps://old.scielo.br/oai/scielo-oai.php||office@jbcs.sbq.org.br1678-47900103-5053opendoar:2008-05-27T00:00Journal of the Brazilian Chemical Society (Online) - Sociedade Brasileira de Química (SBQ)false |
dc.title.none.fl_str_mv |
Non-aromatic hydrocarbons in recent sediments of Sepetiba and Ilha Grande Bays, Brazil |
title |
Non-aromatic hydrocarbons in recent sediments of Sepetiba and Ilha Grande Bays, Brazil |
spellingShingle |
Non-aromatic hydrocarbons in recent sediments of Sepetiba and Ilha Grande Bays, Brazil Figueiredo,Luis H. M. non-aromatic hydrocarbons sediments Ilha Grande Bay Sepetiba Bay |
title_short |
Non-aromatic hydrocarbons in recent sediments of Sepetiba and Ilha Grande Bays, Brazil |
title_full |
Non-aromatic hydrocarbons in recent sediments of Sepetiba and Ilha Grande Bays, Brazil |
title_fullStr |
Non-aromatic hydrocarbons in recent sediments of Sepetiba and Ilha Grande Bays, Brazil |
title_full_unstemmed |
Non-aromatic hydrocarbons in recent sediments of Sepetiba and Ilha Grande Bays, Brazil |
title_sort |
Non-aromatic hydrocarbons in recent sediments of Sepetiba and Ilha Grande Bays, Brazil |
author |
Figueiredo,Luis H. M. |
author_facet |
Figueiredo,Luis H. M. Wagener,Angela de L. R. Dagaut,Jacques Saliot,Alain |
author_role |
author |
author2 |
Wagener,Angela de L. R. Dagaut,Jacques Saliot,Alain |
author2_role |
author author author |
dc.contributor.author.fl_str_mv |
Figueiredo,Luis H. M. Wagener,Angela de L. R. Dagaut,Jacques Saliot,Alain |
dc.subject.por.fl_str_mv |
non-aromatic hydrocarbons sediments Ilha Grande Bay Sepetiba Bay |
topic |
non-aromatic hydrocarbons sediments Ilha Grande Bay Sepetiba Bay |
description |
An investigation was conducted in Ilha Grande and Sepetiba Bays aiming at identifying the nature of non-aromatic hydrocarbons (NAH) in surface sediments. NAH concentrations ranged from 2.5 µg g-1 to 193.8 µg g-1 of which the major fraction (53 to 93%) was composed by unresolved complex mixture (UMC). In most samples n-alkane distribution was dominated by compounds of odd carbon number showing maxima in nC29 and nC31. Mono-olefins were at low concentrations and the polyolefins including highly branched isoprenoids and squalene varied from 0.099 µg g-1 to 1.387 µg g-1 with lower values relative to NAH appearing in areas of strong terrestrial and anthropogenic influence. Hopanes between C27 and C33 were observed in all samples with the predominant configuration 17a(H),21b(H), characteristic of a petrogenic origin. |
publishDate |
2008 |
dc.date.none.fl_str_mv |
2008-01-01 |
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=S0103-50532008000300020 |
url |
http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0103-50532008000300020 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
10.1590/S0103-50532008000300020 |
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.19 n.3 2008 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_ |
1750318168659722240 |