Fluorescence investigation of the chromatographic interactions of nitrogen heterocycles with deactivated silica
Solid-surface fluorescence spectroscopy was used to study the chromatographic interactions of benzo(f)quinoline (B(f)Q) and benzo(h)quinoline (B(h)Q) with water-deactivated silica gel. The results indicated that some of the water was adsorbed on sites in silica that were incapable of proton donation to B(h)Q in the excited singlet state. It was also found that solute localization became more important on the water-deactivated silica. By combination of the luminescence data and the chromatographic data, the mass balance was calculated for three B(h)Q species responsible for the chromatographic bands. Spectral evidence was also obtained that supported a displacement-type of chromatographic mechanism for the systems investigated.
- Research Organization:
- Univ. of Wyoming, Laramie (USA)
- DOE Contract Number:
- FG02-86ER13547
- OSTI ID:
- 6479356
- Journal Information:
- Anal. Chem.; (United States), Journal Name: Anal. Chem.; (United States) Vol. 60:20; ISSN ANCHA
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
400201* -- Chemical & Physicochemical Properties
ADSORBENTS
ADSORPTION
CHEMICAL REACTIONS
CHROMATOGRAPHY
DATA
EMISSION SPECTROSCOPY
EXPERIMENTAL DATA
FLUORESCENCE SPECTROSCOPY
HETEROCYCLIC COMPOUNDS
HYDROGEN COMPOUNDS
INFORMATION
MATERIAL BALANCE
NUMERICAL DATA
ORGANIC COMPOUNDS
ORGANIC NITROGEN COMPOUNDS
OXYGEN COMPOUNDS
SEPARATION PROCESSES
SILICA GEL
SOLIDS
SORPTION
SPECTROSCOPY
SURFACES
WATER