Rapid Sara Seprations by High Performance Liqid Chromatography

Galya, Laurine; Suatoni, J.C.

doi:10.1080/01483918008060167

Cited by 35 publications

(18 citation statements)

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“…Separation methods in use for quite a long time to isolate polar hydrocarbons (resins), were based in the increase retention of these species over clay enriched with FeCI) (Coleman et. aI., 1973;Latham and Haines, 1973;Jewell et aI., 1974;Galya and Suatoni, 1980). The most extensive data on the interaction between iron compounds, mineral matter and organic matter is available in the large number of works published by Canadian researchers on pond-tailings remaining after the alkaline-water extraction process of Alberta bitumens.…”

Section: Iron Compounds and Oil Polar Hydrocarbons 337mentioning

confidence: 96%

Effects of Iron Compounds on the Retention of Oil Polar Hydrocarbons Over Solid Sorbents

Carbognani

2000

Petroleum Science and Technology

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Screening of the interaction between iron compounds and asphaltenes was investigated by infrared spectrophotometry. Fez03 was found to be the most active compound among the STudied ones. Evidence suggests that Fez03 affects the Hbonding tendency of asphaltene and resin hydrocarbon group types. Effects of this oxide on the retentivity of diverse solid adsorbents were monitored following the yield of adsorbed polar hydrocarbons from a Venezuelan medium crude oil. In this regard some evidence on the catalytic nature of this effect was found. Water was assessed to be the stronger deactivator and displacer among some mixtures tested to effect the removal of retained polars from the crude, adsorbed onto iron enri-335 Copyright~2000 by Marcel Dekker, Inc.

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Section: Iron Compounds and Oil Polar Hydrocarbons 337mentioning

confidence: 96%

Effects of Iron Compounds on the Retention of Oil Polar Hydrocarbons Over Solid Sorbents

Carbognani

2000

Petroleum Science and Technology

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“…Recently, Lin (1 995) reported data showing the absorptivities of the aromatics fiactions change with aging supporting the conclusions of Bishara and Wilkins. However, Lin reported data supporting the claims of Suatoni and Swab (1975), Gayla and Suatoni (1980), and…”

mentioning

confidence: 86%

“…In a later experiment, Gayla and Suatoni (1980) reported that the response factors for saturates obtained from coal liquids with widely varying boiling points were identical for three out of the four materials they studied, indicating that calibration of saturate content may be possible.…”

mentioning

confidence: 99%

“…In the mid 1970s to early 198Os, petroleum chemists began to use the relatively new analytical technique of (HPLC) for group-type analyses of petroleum and coal derived materials (Suatoni and Swab, 1975;Suatoni and Swab, 1976;Dark and McFadden, 1978;Dark and McGough, 1978;Gayla and Suatoni, 1980). One of the primary advantages of HPLC over open column techniques is the elimination of cut-point subjectivity.…”

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confidence: 99%

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Development of superior asphalt recycling agents. Phase 1, Technical feasibility. Final technical progress report

Bullin¹,

Davison²,

Glover³

et al. 1997

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“…[16] , significant numbers of SARA separations were developed (e.g. references [17][18][19][20][21][22][23][24][25][26][27][28] ), utilising a variety of solid phases, techniques, and detectors. The drawbacks of these methodologies are well known (summarised [29,30] ), with commonly identified issues including method inconsistencies, poor precision and repeatability, cross-contamination, and obligatory de-asphalting steps.…”

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confidence: 99%

Class Type Separation of the Polar and Apolar Components of Petroleum

et al. 2017

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Identification of the heteroatom (nitrogen, sulfur, and oxygen)-containing compounds of petroleum is of key importance when considering industrial and environmental issues associated with crude oil production. The more commonly performed methods of crude oil fractionation are often insufficient in the extent to which they separate oils, not allowing defined "molecular" fractions to be obtained. Methods capable of performing a class type separation are uncommon and are often extensive and resource and time intensive. Here we report a method for the separation of crude oils into discrete compound classes. The method utilizes both ion exchange and normal phase chromatography to generate fractions of saturated hydrocarbons, aromatic hydrocarbons, basic compounds, naphthenic acids, and other oxygen-containing species, carbazoles, sulfones, and thiophenes from small crude oil samples (∼0.5 g). Assessment of method selectivity with a suite of model compounds has shown the fractions to be well-defined, with classes of model compounds isolated within discrete fractions. Application of the method to five crude oils of varying API gravity (12.1-38.3°) demonstrates a potential for wide-ranging use. Sample recoveries were high (77-98%) with simple evaporative losses correlating closely with total sample loss. Repeatability was also high, demonstrated by triplicate analyses of model compound mixtures, oils spiked with model compounds and oils alone. Separation selectivity was further demonstrated by application of the scheme to the Alaska North Slope (ANS) crude oil and analysis of fractions by comprehensive two-dimensional gas-chromatography mass-spectrometry (GC × GC/MS) and/or liquid-chromatography high-resolution accurate-mass mass-spectrometry methods (LC-HRAM-MS). Isolation of discrete fractions then allowed excellent separation (by LC and GC methods) of carbazole, dibenzothiophene, fluorenones, xanthones, and quinoline fractions. Individual parent and C alkyl homologues were easily separated (GC × GC/MS), allowing high-quality mass spectra (EI) to be obtained for the individual compounds in many cases. Analysis of fractions by GC × GC/MS also allowed a series of thioxanones to be identified.

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Rapid Sara Seprations by High Performance Liqid Chromatography

Cited by 35 publications

References 4 publications

Effects of Iron Compounds on the Retention of Oil Polar Hydrocarbons Over Solid Sorbents

Effects of Iron Compounds on the Retention of Oil Polar Hydrocarbons Over Solid Sorbents

Development of superior asphalt recycling agents. Phase 1, Technical feasibility. Final technical progress report

Class Type Separation of the Polar and Apolar Components of Petroleum

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