Title: Improved Conditions for Analysis of the Group Composition of Asphaltenes and Asphaltenes-Containing Materials by Tlc as a Pilot Separation Technique and Tlc-Fid as a Quantitative Analysis Method with Stepwise Development of the Chromatogram
Abstract: Download This Paper Open PDF in Browser Add Paper to My Library Share: Permalink Using these links will ensure access to this page indefinitely Copy URL Improved Conditions for Analysis of the Group Composition of Asphaltenes and Asphaltenes-Containing Materials by Tlc as a Pilot Separation Technique and Tlc-Fid as a Quantitative Analysis Method with Stepwise Development of the Chromatogram 19 Pages Posted: 22 Jul 2022 See all articles by Dorota WojewódkaDorota WojewódkaGdańsk University of TechnologyPaulina DygułaGdańsk University of TechnologyAndrzej PrzyjaznyKettering UniversityMarian KamińskiGdańsk University of Technology Abstract Asphaltenes are the nonvolatile organic components of crude oil insoluble in alkanes. They represent a significant fraction of crude oil distillation residue and residual products, road or industrial asphalts, as well as natural asphalts. To characterize these products and raw materials, a SARA (Saturates, Aromatics, Resins, Asphaltenes) analysis method is used. This work aimed at establishing optimum conditions for the SARA analysis using conventional adsorption thin layer chromatography on silica gel impregnated with berberine salt as a pilot technique for selecting separation conditions with stepwise development of TLC chromatogram at different distances in successive separation steps and thin-layer chromatography with flame ionization detection (TLC-FID) as a method of quantitative analysis. The parameters to be optimized included elution strength (mobile phase polarity) and migration distance of the mobile phase in successive steps of the development of a TLC/TLC-FID chromatogram. The studies revealed that in the first step of stepwise development of a TLC/TLC-FID chromatogram, the mobile phase should dissolve all components of the investigated mixture, including asphaltenes. The preferred conditions for the stepwise development of a TLC or TLC-FID chromatogram for SARA analysis are as follows: in the first step, a mixture of dichloromethane – methanol 95:5 (v/v) as the mobile phase with the development of the chromatogram to a height of 30% of the adsorbent layer; in the second step, toluene as the mobile phase with the development of the chromatogram to a height of 60% of the adsorbent layer; in the third step, n -hexane as the mobile phase with the development of the chromatogram to a height of 100% of the adsorbent layer. The sample mass should not exceed 5 μg for asphalts and similar materials and 2 μg for asphaltenes and asphaltene fractions. Modification of the standard method IP 469 in terms of the sequence of stepwise development of the TLC-FID chromatogram as well as the reduction of sample mass applied to the TLC-FID rod is recommended. Keywords: Vacuum residue of crude oil, asphaltenes and asphalt, group SARA separation, group TLC-FID SARA composition, berberine impregnated TLC plates Suggested Citation: Suggested Citation Wojewódka, Dorota and Dyguła, Paulina and Przyjazny, Andrzej and Kamiński, Marian, Improved Conditions for Analysis of the Group Composition of Asphaltenes and Asphaltenes-Containing Materials by Tlc as a Pilot Separation Technique and Tlc-Fid as a Quantitative Analysis Method with Stepwise Development of the Chromatogram. Available at SSRN: https://ssrn.com/abstract=4169533 Dorota Wojewódka (Contact Author) Gdańsk University of Technology ( email ) Poland Paulina Dyguła Gdańsk University of Technology ( email ) Poland Andrzej Przyjazny Kettering University ( email ) 1700 W. Third AveFlint, MI 48504United States Marian Kamiński Gdańsk University of Technology ( email ) Poland Download This Paper Open PDF in Browser Do you have a job opening that you would like to promote on SSRN? Place Job Opening Paper statistics Downloads 0 Abstract Views 0 PlumX Metrics Feedback Feedback to SSRN Feedback (required) Email (required) Submit If you need immediate assistance, call 877-SSRNHelp (877 777 6435) in the United States, or +1 212 448 2500 outside of the United States, 8:30AM to 6:00PM U.S. Eastern, Monday - Friday. Submit a Paper Section 508 Text Only Pages SSRN Quick Links SSRN Solutions Research Paper Series Conference Papers Partners in Publishing Jobs & Announcements Newsletter Sign Up SSRN Rankings Top Papers Top Authors Top Organizations About SSRN SSRN Objectives Network Directors Presidential Letter Announcements Contact us FAQs Copyright Terms and Conditions Privacy Policy We use cookies to help provide and enhance our service and tailor content. To learn more, visit Cookie Settings. This page was processed by aws-apollo4 in 0.228 seconds
Publication Year: 2022
Publication Date: 2022-01-01
Language: en
Type: article
Indexed In: ['crossref']
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Cited By Count: 1
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