AVALIAÇÃO DA EXTENSÃO DA BIODEGRADAÇÃO DE PETRÓLEOS BRASILEIROS COM ÊNFASE NOS N-ALQUILCICLOHEXANOS

Detalhes bibliográficos
Autor(a) principal: Martins,Laercio Lopes
Data de Publicação: 2019
Outros Autores: Cruz,Georgiana Feitosa da, Santos,Lívia Carvalho, Pudenzi,Marcos Albieri, Eberlin,Marcos Nogueira
Tipo de documento: Artigo
Idioma: por
Título da fonte: Química Nova (Online)
Texto Completo: http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0100-40422019000300289
Resumo: The n-alkylcyclohexanes are poorly evaluated in biodegradation studies of Brazilian petroleum samples. In this context, this work aimed to use the homologue series of alkylcyclohexanes to assess extend of biodegradation of 26 petroleum samples from five Brazilian sedimentary basins, analyzed by gas chromatography coupled to mass spectrometry. The n-alkylcyclohexanes compounds were detected in all samples, with a distribution similar to the n-alkane profile, in which their abundance decreasing with increasing of the biodegradation extent. Based on this, it was suggested the use of the new parameter H30/DC together with the H30/AC already proposed, calculated by the ratio between C30 hopane to the dodecyl-cyclohexane, to assess biodegradation level according Peter and Moldowan scale (PM scale). In addition, it was observed an increasing in the relative abundance of DBE 2 from class O2, analyzed by ESI(-) FT-ICR MS, mainly due to the formation of monocyclic acids with biodegradation, which correlates with the decrease of n-alkylcyclohexanes, a possible precursor of these acids.
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spelling AVALIAÇÃO DA EXTENSÃO DA BIODEGRADAÇÃO DE PETRÓLEOS BRASILEIROS COM ÊNFASE NOS N-ALQUILCICLOHEXANOSpetroleumbiodegradationn-alkylcyclohexanesGC-MSpetroleomicsThe n-alkylcyclohexanes are poorly evaluated in biodegradation studies of Brazilian petroleum samples. In this context, this work aimed to use the homologue series of alkylcyclohexanes to assess extend of biodegradation of 26 petroleum samples from five Brazilian sedimentary basins, analyzed by gas chromatography coupled to mass spectrometry. The n-alkylcyclohexanes compounds were detected in all samples, with a distribution similar to the n-alkane profile, in which their abundance decreasing with increasing of the biodegradation extent. Based on this, it was suggested the use of the new parameter H30/DC together with the H30/AC already proposed, calculated by the ratio between C30 hopane to the dodecyl-cyclohexane, to assess biodegradation level according Peter and Moldowan scale (PM scale). In addition, it was observed an increasing in the relative abundance of DBE 2 from class O2, analyzed by ESI(-) FT-ICR MS, mainly due to the formation of monocyclic acids with biodegradation, which correlates with the decrease of n-alkylcyclohexanes, a possible precursor of these acids.Sociedade Brasileira de Química2019-03-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersiontext/htmlhttp://old.scielo.br/scielo.php?script=sci_arttext&pid=S0100-40422019000300289Química Nova v.42 n.3 2019reponame:Química Nova (Online)instname:Sociedade Brasileira de Química (SBQ)instacron:SBQ10.21577/0100-4042.20170328info:eu-repo/semantics/openAccessMartins,Laercio LopesCruz,Georgiana Feitosa daSantos,Lívia CarvalhoPudenzi,Marcos AlbieriEberlin,Marcos Nogueirapor2019-04-30T00:00:00Zoai:scielo:S0100-40422019000300289Revistahttps://www.scielo.br/j/qn/ONGhttps://old.scielo.br/oai/scielo-oai.phpquimicanova@sbq.org.br1678-70640100-4042opendoar:2019-04-30T00:00Química Nova (Online) - Sociedade Brasileira de Química (SBQ)false
dc.title.none.fl_str_mv AVALIAÇÃO DA EXTENSÃO DA BIODEGRADAÇÃO DE PETRÓLEOS BRASILEIROS COM ÊNFASE NOS N-ALQUILCICLOHEXANOS
title AVALIAÇÃO DA EXTENSÃO DA BIODEGRADAÇÃO DE PETRÓLEOS BRASILEIROS COM ÊNFASE NOS N-ALQUILCICLOHEXANOS
spellingShingle AVALIAÇÃO DA EXTENSÃO DA BIODEGRADAÇÃO DE PETRÓLEOS BRASILEIROS COM ÊNFASE NOS N-ALQUILCICLOHEXANOS
Martins,Laercio Lopes
petroleum
biodegradation
n-alkylcyclohexanes
GC-MS
petroleomics
title_short AVALIAÇÃO DA EXTENSÃO DA BIODEGRADAÇÃO DE PETRÓLEOS BRASILEIROS COM ÊNFASE NOS N-ALQUILCICLOHEXANOS
title_full AVALIAÇÃO DA EXTENSÃO DA BIODEGRADAÇÃO DE PETRÓLEOS BRASILEIROS COM ÊNFASE NOS N-ALQUILCICLOHEXANOS
title_fullStr AVALIAÇÃO DA EXTENSÃO DA BIODEGRADAÇÃO DE PETRÓLEOS BRASILEIROS COM ÊNFASE NOS N-ALQUILCICLOHEXANOS
title_full_unstemmed AVALIAÇÃO DA EXTENSÃO DA BIODEGRADAÇÃO DE PETRÓLEOS BRASILEIROS COM ÊNFASE NOS N-ALQUILCICLOHEXANOS
title_sort AVALIAÇÃO DA EXTENSÃO DA BIODEGRADAÇÃO DE PETRÓLEOS BRASILEIROS COM ÊNFASE NOS N-ALQUILCICLOHEXANOS
author Martins,Laercio Lopes
author_facet Martins,Laercio Lopes
Cruz,Georgiana Feitosa da
Santos,Lívia Carvalho
Pudenzi,Marcos Albieri
Eberlin,Marcos Nogueira
author_role author
author2 Cruz,Georgiana Feitosa da
Santos,Lívia Carvalho
Pudenzi,Marcos Albieri
Eberlin,Marcos Nogueira
author2_role author
author
author
author
dc.contributor.author.fl_str_mv Martins,Laercio Lopes
Cruz,Georgiana Feitosa da
Santos,Lívia Carvalho
Pudenzi,Marcos Albieri
Eberlin,Marcos Nogueira
dc.subject.por.fl_str_mv petroleum
biodegradation
n-alkylcyclohexanes
GC-MS
petroleomics
topic petroleum
biodegradation
n-alkylcyclohexanes
GC-MS
petroleomics
description The n-alkylcyclohexanes are poorly evaluated in biodegradation studies of Brazilian petroleum samples. In this context, this work aimed to use the homologue series of alkylcyclohexanes to assess extend of biodegradation of 26 petroleum samples from five Brazilian sedimentary basins, analyzed by gas chromatography coupled to mass spectrometry. The n-alkylcyclohexanes compounds were detected in all samples, with a distribution similar to the n-alkane profile, in which their abundance decreasing with increasing of the biodegradation extent. Based on this, it was suggested the use of the new parameter H30/DC together with the H30/AC already proposed, calculated by the ratio between C30 hopane to the dodecyl-cyclohexane, to assess biodegradation level according Peter and Moldowan scale (PM scale). In addition, it was observed an increasing in the relative abundance of DBE 2 from class O2, analyzed by ESI(-) FT-ICR MS, mainly due to the formation of monocyclic acids with biodegradation, which correlates with the decrease of n-alkylcyclohexanes, a possible precursor of these acids.
publishDate 2019
dc.date.none.fl_str_mv 2019-03-01
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=S0100-40422019000300289
url http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0100-40422019000300289
dc.language.iso.fl_str_mv por
language por
dc.relation.none.fl_str_mv 10.21577/0100-4042.20170328
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 Química Nova v.42 n.3 2019
reponame:Química Nova (Online)
instname:Sociedade Brasileira de Química (SBQ)
instacron:SBQ
instname_str Sociedade Brasileira de Química (SBQ)
instacron_str SBQ
institution SBQ
reponame_str Química Nova (Online)
collection Química Nova (Online)
repository.name.fl_str_mv Química Nova (Online) - Sociedade Brasileira de Química (SBQ)
repository.mail.fl_str_mv quimicanova@sbq.org.br
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