NDLI: Size-Exclusion Chromatography of Asphaltenes: An Experimental Comparison of Commonly Used Approaches

Content Provider	Springer Nature Link
Author	Dong, Shen Striegel, André M.
Copyright Year	2013
Abstract	Asphaltenes, the heaviest and most polar fraction of crude oil, are responsible for the clogging of oil pipelines and of underground reservoir rocks. Asphaltenes are defined as a solubility class (toluene- or benzene-soluble, n-alkane insoluble), and a consensus is still lacking on the molar mass (M) averages, distribution, and range of these materials. Size-exclusion chromatography (SEC) is among the most widely employed methods for characterizing the M averages and distributions of both natural and synthetic polymers and, as such, has seen widespread application in the study of asphaltenes. SEC analysis of asphaltenes presents a number of challenges, however, some inherent to all low-M materials and some unique to these particular analytes. Here, we have experimentally compared several of the most commonly used approaches to SEC of asphaltenes, in hope of both demonstrating the influence of experimental conditions upon the results obtained as well as to determine optimal conditions of analysis. In the end, while the former goal was met, the latter one remains an open challenge in the field.
Starting Page	725
Ending Page	733
Page Count	9
File Format	PDF
ISSN	00095893
Journal	Chromatographia
Volume Number	76
Issue Number	13-14
e-ISSN	16121112
Language	English
Publisher	Springer-Verlag
Publisher Date	2013-05-04
Publisher Place	Berlin, Heidelberg
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Size-exclusion chromatography Asphaltenes Experimental comparison Challenges Chromatography Proteomics Pharmacy Laboratory Medicine
Content Type	Text
Resource Type	Article
Subject	Organic Chemistry Analytical Chemistry Biochemistry Clinical Biochemistry

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