Trace element distributions in biodegraded crude oils and fractions from the Potiguar Basin, 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=S0103-50532008000500025 |
Resumo: | Trace element distribution patterns were determined in crude oils from onshore biodegraded reservoirs along a secondary migration trend (Potiguar Basin, Brazil). Samples were fractionated into asphaltenes, paraffins, aromatics and polars and resins for the determination of 22 trace elements by ICP-MS. Most of them are strongly enriched in the resin and asphaltene fractions, but V and Ni are also associated with the aromatic and polar fractions. V, Co, Ni and Mo were influenced by biodegrading processes and accumulate in the most affected and migrated samples. Variations of the Ni/V ratio in aromatics and polars, matching those of homohopane and gammacerane indexes in paraffin, evidenced also the influence of biodegradation. Very similar elemental distribution patterns in oil and corresponding asphaltenes were observed, suggesting that the latter fraction, more refractory than the original oil, can be used as a robust inorganic geochemical fingerprint for oil characterization. |
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Trace element distributions in biodegraded crude oils and fractions from the Potiguar Basin, Brazilsecondary oil migrationbiodegradationasphaltenestrace elementsICP-MSTrace element distribution patterns were determined in crude oils from onshore biodegraded reservoirs along a secondary migration trend (Potiguar Basin, Brazil). Samples were fractionated into asphaltenes, paraffins, aromatics and polars and resins for the determination of 22 trace elements by ICP-MS. Most of them are strongly enriched in the resin and asphaltene fractions, but V and Ni are also associated with the aromatic and polar fractions. V, Co, Ni and Mo were influenced by biodegrading processes and accumulate in the most affected and migrated samples. Variations of the Ni/V ratio in aromatics and polars, matching those of homohopane and gammacerane indexes in paraffin, evidenced also the influence of biodegradation. Very similar elemental distribution patterns in oil and corresponding asphaltenes were observed, suggesting that the latter fraction, more refractory than the original oil, can be used as a robust inorganic geochemical fingerprint for oil characterization.Sociedade Brasileira de Química2008-01-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersiontext/htmlhttp://old.scielo.br/scielo.php?script=sci_arttext&pid=S0103-50532008000500025Journal of the Brazilian Chemical Society v.19 n.5 2008reponame:Journal of the Brazilian Chemical Society (Online)instname:Sociedade Brasileira de Química (SBQ)instacron:SBQ10.1590/S0103-50532008000500025info:eu-repo/semantics/openAccessDuyck,ChristianeMiekeley,NorbertFonseca,Teresa C. O.Szatmari,PeterSantos Neto,Eugênio Vaz doseng2008-08-05T00:00:00Zoai:scielo:S0103-50532008000500025Revistahttp://jbcs.sbq.org.brONGhttps://old.scielo.br/oai/scielo-oai.php||office@jbcs.sbq.org.br1678-47900103-5053opendoar:2008-08-05T00:00Journal of the Brazilian Chemical Society (Online) - Sociedade Brasileira de Química (SBQ)false |
dc.title.none.fl_str_mv |
Trace element distributions in biodegraded crude oils and fractions from the Potiguar Basin, Brazil |
title |
Trace element distributions in biodegraded crude oils and fractions from the Potiguar Basin, Brazil |
spellingShingle |
Trace element distributions in biodegraded crude oils and fractions from the Potiguar Basin, Brazil Duyck,Christiane secondary oil migration biodegradation asphaltenes trace elements ICP-MS |
title_short |
Trace element distributions in biodegraded crude oils and fractions from the Potiguar Basin, Brazil |
title_full |
Trace element distributions in biodegraded crude oils and fractions from the Potiguar Basin, Brazil |
title_fullStr |
Trace element distributions in biodegraded crude oils and fractions from the Potiguar Basin, Brazil |
title_full_unstemmed |
Trace element distributions in biodegraded crude oils and fractions from the Potiguar Basin, Brazil |
title_sort |
Trace element distributions in biodegraded crude oils and fractions from the Potiguar Basin, Brazil |
author |
Duyck,Christiane |
author_facet |
Duyck,Christiane Miekeley,Norbert Fonseca,Teresa C. O. Szatmari,Peter Santos Neto,Eugênio Vaz dos |
author_role |
author |
author2 |
Miekeley,Norbert Fonseca,Teresa C. O. Szatmari,Peter Santos Neto,Eugênio Vaz dos |
author2_role |
author author author author |
dc.contributor.author.fl_str_mv |
Duyck,Christiane Miekeley,Norbert Fonseca,Teresa C. O. Szatmari,Peter Santos Neto,Eugênio Vaz dos |
dc.subject.por.fl_str_mv |
secondary oil migration biodegradation asphaltenes trace elements ICP-MS |
topic |
secondary oil migration biodegradation asphaltenes trace elements ICP-MS |
description |
Trace element distribution patterns were determined in crude oils from onshore biodegraded reservoirs along a secondary migration trend (Potiguar Basin, Brazil). Samples were fractionated into asphaltenes, paraffins, aromatics and polars and resins for the determination of 22 trace elements by ICP-MS. Most of them are strongly enriched in the resin and asphaltene fractions, but V and Ni are also associated with the aromatic and polar fractions. V, Co, Ni and Mo were influenced by biodegrading processes and accumulate in the most affected and migrated samples. Variations of the Ni/V ratio in aromatics and polars, matching those of homohopane and gammacerane indexes in paraffin, evidenced also the influence of biodegradation. Very similar elemental distribution patterns in oil and corresponding asphaltenes were observed, suggesting that the latter fraction, more refractory than the original oil, can be used as a robust inorganic geochemical fingerprint for oil characterization. |
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=S0103-50532008000500025 |
url |
http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0103-50532008000500025 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
10.1590/S0103-50532008000500025 |
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.5 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_ |
1750318169022529536 |