Implication of on-line Fourier transform infrared detection in the separation of aromatic compounds via normal-phase liquid chromatography
Normal-phase liquid chromatography has been used to separate nitrogen heterocyclics and aromatics with polar groups which are known to be present together in solvent refined coal. The identification of the separated components was accomplished by on-line coupling of the Fourier transform infrared spectrometer as a chromatographic detector. The separation of these model compounds was carried out using Li Chrosorb NH/sub 2/ and CN in series. Chloroform was used as mobile phase. All the compounds could be identified in spite of incomplete separation in some cases. A suitable interface adapted to the different methods of HPLC and FTIR allowed the detection of about 5 ..mu..g per injected compound.
- Research Organization:
- Central Institute of Physical Chemistry, Academy of Sciences (DD)
- OSTI ID:
- 7122066
- Journal Information:
- J. Liquid Chromatogr.; (United States), Journal Name: J. Liquid Chromatogr.; (United States) Vol. 11:4; ISSN JLCHD
- Country of Publication:
- United States
- Language:
- English
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010600* -- Coal
Lignite
& Peat-- Properties & Composition
37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
400102 -- Chemical & Spectral Procedures
AROMATICS
CHEMICAL ANALYSIS
CHEMICAL COMPOSITION
CHLORINATED ALIPHATIC HYDROCARBONS
CHLOROFORM
CHROMATOGRAPHY
EMISSION SPECTROSCOPY
FOURIER TRANSFORMATION
FUELS
HALOGENATED ALIPHATIC HYDROCARBONS
INFRARED SPECTROMETERS
INTEGRAL TRANSFORMATIONS
LIQUID COLUMN CHROMATOGRAPHY
MEASURING INSTRUMENTS
NITROGEN COMPOUNDS
ON-LINE SYSTEMS
ORGANIC CHLORINE COMPOUNDS
ORGANIC COMPOUNDS
ORGANIC HALOGEN COMPOUNDS
QUANTITATIVE CHEMICAL ANALYSIS
SEPARATION PROCESSES
SOLVENT-REFINED COAL
SPECTROMETERS
SPECTROSCOPY
TRANSFORMATIONS