Supercritical fluid chromatography of polar organic compounds in combustion particulates. Final report. Report for 28 September 1984-31 August 1987
Technical Report
·
OSTI ID:6295819
A thermionic detector was evaluated for capillary supercritical fluid chromatography (SFC) of polar nitro-containing polycyclic aromatic compounds (nitro-PAC). Three modes of operation were studied. The best performance was obtained using a nitro-selective mode of detection. A number of nitro-PAC were successfully chromatographed using density programming at 101 C. Capillary column gas chromatography-mass spectrometry was used with state-of-the-art injection techniques and inert columns to analyze diesel-exhaust particulate extracts. Polar normal phase HPLC fractions of a heavy-duty diesel-exhaust particulate, a National Bureau of Standards (NBS) Standard Reference Material (SRM) 1650, were analyzed by capillary column GC coupled to high resolution mass spectrometry using electron-impact (EI) and negative-ion chemical ionization (NICI). A total of 80 polycyclic aromatic compounds, belonging to many different chemical classes, were identified. Among them, phenazine and phthalic anhydride were positively identified for the first time in diesel-exhaust particulates. In addition, cyclic imides and their alkylated derivatives were tentatively identified for the first time, according to their electron impact mass spectra and exact mass measurements. Other novel polar chemical classes of PAC were evidence by NICI MS using a direct insertion probe.
- Research Organization:
- Brigham Young Univ., Provo, UT (USA). Dept. of Chemistry
- OSTI ID:
- 6295819
- Report Number(s):
- PB-89-152441/XAB
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
33 ADVANCED PROPULSION SYSTEMS
330102 -- Internal Combustion Engines-- Diesel
330704 -- Emission Control-- Hydrocarbons
330705* -- Emission Control-- Particulates
AMINES
CAPILLARY FLOW
CHROMATOGRAPHY
DIESEL ENGINES
DOCUMENT TYPES
EMISSION
ENGINES
EXHAUST GASES
FLUID FLOW
FLUIDS
GASEOUS WASTES
GASES
HEAT ENGINES
INTERNAL COMBUSTION ENGINES
IONIZATION
MASS SPECTROSCOPY
NITRO COMPOUNDS
ORGANIC COMPOUNDS
ORGANIC NITROGEN COMPOUNDS
PARTICLES
PARTICULATES
POLYCYCLIC AROMATIC AMINES
PROGRESS REPORT
SEPARATION PROCESSES
SPECTROSCOPY
SUPERCRITICAL FLUID CHROMATOGRAPHY
THERMIONIC EMISSION
WASTES
330102 -- Internal Combustion Engines-- Diesel
330704 -- Emission Control-- Hydrocarbons
330705* -- Emission Control-- Particulates
AMINES
CAPILLARY FLOW
CHROMATOGRAPHY
DIESEL ENGINES
DOCUMENT TYPES
EMISSION
ENGINES
EXHAUST GASES
FLUID FLOW
FLUIDS
GASEOUS WASTES
GASES
HEAT ENGINES
INTERNAL COMBUSTION ENGINES
IONIZATION
MASS SPECTROSCOPY
NITRO COMPOUNDS
ORGANIC COMPOUNDS
ORGANIC NITROGEN COMPOUNDS
PARTICLES
PARTICULATES
POLYCYCLIC AROMATIC AMINES
PROGRESS REPORT
SEPARATION PROCESSES
SPECTROSCOPY
SUPERCRITICAL FLUID CHROMATOGRAPHY
THERMIONIC EMISSION
WASTES