1999
DOI: 10.1016/s0146-6380(99)00107-2
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Acidic biomarkers from Albacora oils, Campos Basin, Brazil

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Cited by 71 publications
(48 citation statements)
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“…However, this observation can be explained if the oil is considered to contain a mixture of lightly and heavily biodegraded oils (Nascimento et al, 1999;Pan et al, 2003;Philp, 1983;Rooney et al, 1998;Volkman et al, 1983). Thus, this assemblage of biomarkers is consistent with a reservoir mechanism involving at least two charges, with an earlier charge experiencing heavy biodegradation while a subsequent charge is essentially unaltered by microbes.…”
Section: Figure 5 and Table 2 Near Herementioning
confidence: 68%
“…However, this observation can be explained if the oil is considered to contain a mixture of lightly and heavily biodegraded oils (Nascimento et al, 1999;Pan et al, 2003;Philp, 1983;Rooney et al, 1998;Volkman et al, 1983). Thus, this assemblage of biomarkers is consistent with a reservoir mechanism involving at least two charges, with an earlier charge experiencing heavy biodegradation while a subsequent charge is essentially unaltered by microbes.…”
Section: Figure 5 and Table 2 Near Herementioning
confidence: 68%
“…The species with a DBE of 5 are likely 4-ring steroidal acids (Seifert et al, 1972;Rodrigues et al, 2000;Peters et al, 2005) and/or secohopanoic acids (Nascimento et al, 1999;Shi et al, 2010b). The species with a DBE of 6 are likely 5-ring hopanoic acids (Jaffé and Gallardo, 1993;Watson et al, 2002).…”
Section: O2 Classmentioning
confidence: 99%
“…[95][96][97] Para o isolamento de compostos ácidos, o uso de sílica é limitado, uma vez que os grupos silanóis presentes na superfície da sílica podem promover a adsorção irreversível dos compostos polares. [98][99][100] Como alternativa para aumentar os teores de recuperação dos compostos ácidos, há estudos que utilizaram a sílica impregnada com KOH [101][102][103] ou modificada com grupos aminopropílicos e cianopropílicos. [104][105][106][107] Os trabalhos desenvolvidos por Bourgund e colaboradores 104,106 empregaram a separação por cromatografia líquida preparativa em fase normal com colunas ciano para obtenção de frações ácidas de petróleo.…”
Section: Relação Entre O Teor De Enxofre No Combustível E a Corrosão unclassified