Separation of asphaltenes using high-resolution supercritical-fluid chromatography. Progress report, March 1, 1982-May 31, 1982. [Methylpolysiloxane] [electronic resource]
During this quarter more polar stationary phases were developed and tested for application to supercritical fluid chromatography. The studies initiated during the previous quarter into the dependence of the chromatography on pressure, viz., density, were continued in-depth. The on-column fluorimetri...
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| Online Access: |
Online Access |
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| Format: | Government Document Electronic eBook |
| Language: | English |
| Published: |
Oak Ridge, Tenn. :
distributed by the Office of Scientific and Technical Information, U.S. Department of Energy,
1982.
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| Subjects: |
| Summary: | During this quarter more polar stationary phases were developed and tested for application to supercritical fluid chromatography. The studies initiated during the previous quarter into the dependence of the chromatography on pressure, viz., density, were continued in-depth. The on-column fluorimetric detector was modified for greater sensitivity. In addition, some brief studies were done using propane as a carrier as well as isopropanol-doped n-pentane. Synthesis of 50% and 70% phenyl methylphenylpolysiloxane polymers and their in-situ free radical crosslinking with peroxides was accomplished. Chromatographic evidence of coal tar is presented that illustrates the high efficiency and thermal stability of these phases when coated on fused silica capillary columns. 20 figures. |
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| Item Description: | Published through SciTech Connect. 01/01/1982. "doe/pc/40809-t3" "DE82015649" Jackson, W P; Richter, B E; Fjeldsted, J C; Peaden, P A; Lee, M L. Brigham Young Univ., Provo, UT (USA). Department of Chemistry. |
| Physical Description: | Pages: 43 : digital, PDF file. |