2002
DOI: 10.1021/ef0201228
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Rapid and Accurate SARA Analysis of Medium Gravity Crude Oils

Abstract: Crude oils can be described compositionally by a number of methods. SARA analysis is widely used to divide crude oil components according to their polarizability and polarity using a family of related analytical techniques. Problems arise because the analytical techniques do not necessarily produce identical results. Users of the data, however, rarely distinguish between the different techniques, assuming that SARA fraction values generated by any of the commonly used methods are essentially interchangeable. W… Show more

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Cited by 200 publications
(139 citation statements)
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“…12 Moreover, the results of SARA analysis using different techniques and/or from different laboratories can vary greatly. 13,14 Despite these ambiguities, SARA analysis has become a widespread characterization method of crude oil. SARA analysis results have successfully guided the processing and refining paths of crudes based on the quantity of asphaltenes in crudes.…”
Section: Saramentioning
confidence: 99%
“…12 Moreover, the results of SARA analysis using different techniques and/or from different laboratories can vary greatly. 13,14 Despite these ambiguities, SARA analysis has become a widespread characterization method of crude oil. SARA analysis results have successfully guided the processing and refining paths of crudes based on the quantity of asphaltenes in crudes.…”
Section: Saramentioning
confidence: 99%
“…This technique has been successfully employed to analyze saturate, aromatic, resin and asphaltene (SARA) fractions of crude oils and we remit to literature [1,2,24,25] for further explanations. In our case, the SARA fractions of the bitumen were separated and quantified using selective solvents like hexane, toluene and a 95%-5% mixture of dicloromethane/methanol.…”
Section: Materials and Methodologymentioning
confidence: 99%
“…Denomina-se análise SARA o isolamento que fornece frações de compostos saturados, aromáticos, resinas e asfaltenos, eluídos conforme sua solubilidade em solventes de polaridade crescente. [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.…”
Section: Relação Entre O Teor De Enxofre No Combustível E a Corrosão unclassified