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  Modified SARA Method to Unravel the Complexity of Resin Fraction(s) in Crude Oil

Santos, J. M., Vetere, A., Wisniewski, A., Eberlin, M. N., & Schrader, W. (2020). Modified SARA Method to Unravel the Complexity of Resin Fraction(s) in Crude Oil. Energy & Fuels, 34(12), 16006-16013. doi:10.1021/acs.energyfuels.0c02833.

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 Creators:
Santos, Jandyson M.1, Author           
Vetere, Alessandro1, Author           
Wisniewski, Alberto2, Author
Eberlin, Marcos N.3, Author
Schrader, Wolfgang1, Author           
Affiliations:
1Service Department Schrader (MS), Max-Planck-Institut für Kohlenforschung, Max Planck Society, ou_1445629              
2Department of Chemistry, Federal University of Sergipe−UFS, 49100-000 São Cristóvão, Sergipe, Brazil, ou_persistent22              
3Institute of Chemistry, University of Campinas—UNICAMP, 13083-970 Campinas, São Paulo, Brazil, ou_persistent22              

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 Abstract: The complexity of crude oil samples has hindered its detailed analysis and understanding. Although modern analytical methods such as ultrahigh-resolution mass spectrometry have opened the understanding of the molecular composition, discrimination due to the complexity is sabotaging a better understanding. Therefore, the SARA fractionation has been used to reduce complexity by adding a fractionation step prior to analysis. However, our studies indicate that the conventional combinations of solvents used for SARA fractionation are inefficient for the elution of heavier fractions of crude oil from the alumina stationary phase. Adding an additional step to the conventional SARA scheme provides a second resin fraction using ethyl acetate as an additional mobile phase and provides a new material that has not yet been reported. For a better understanding of the differences between both resin fractions, detailed studies have been carried out utilizing ultrahigh-resolution mass spectrometry with different types of ionization methods, one of the best scenarios to reduce discrimination and suppression effects.

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Language(s): eng - English
 Dates: 2020-08-212020-12-082020-12-17
 Publication Status: Published in print
 Pages: 8
 Publishing info: -
 Table of Contents: -
 Rev. Type: Peer
 Identifiers: DOI: 10.1021/acs.energyfuels.0c02833
 Degree: -

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Title: Energy & Fuels
  Abbreviation : Energy Fuels
Source Genre: Journal
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Publ. Info: Washington, D.C. : American Chemical Society
Pages: - Volume / Issue: 34 (12) Sequence Number: - Start / End Page: 16006 - 16013 Identifier: ISSN: 0887-0624
CoNE: https://pure.mpg.de/cone/journals/resource/954925553390