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Type: Artigo de periódico
Title: 3-alkyl and 3-carboxyalkyl steranes in marine evaporitic oils of the Potiguar Basin, Brazil
Author: Lopes, JAD
Neto, EVS
Mello, MR
Koike, L
Marsaioli, AJ
Reis, FDM
Abstract: The geochemical characterization of marine evaporitic oils from the Fazenda Belem oil field, Potiguar Basin, Brazil showed good correlation between both acidic and neutral fractions, and led to the identification of several biomarkers including the homologous series of 3-alkyl- and 3-carboxyalkyl-5 alpha(H) steranes and also the new series of 3-alkyl- and 3-carboxyalkyl-5 beta(H) steranes. These compounds were identified using GC/MS and their structures were confirmed by coinjection with synthetic standards. A minor series of 4-carboxyalkyl steranes was also detected. The analysis of the acidic biomarkers allowed a more accurate evaluation of maturation, biodegradation and migration of the studied oils. (C) 1999 Elsevier Science B.V. All rights reserved.
Subject: sterane
marine evaporitic oil
acidic biomarker
Country: Holanda
Editor: Elsevier Science Bv
Rights: fechado
Identifier DOI: 10.1016/S0009-2541(99)00013-3
Date Issue: 1999
Appears in Collections:Unicamp - Artigos e Outros Documentos

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