Characterization of polychlorinated biphenyl congeners and isomers in commercial Aroclor mixtures

Conference · Wed Feb 26 04:00:00 EST 1992

OSTI ID:10139362

Smyrl, N R; Hembree, Jr, D H; Williams, D M

A new instrument combining infrared and mass spectrometry to simultaneously examine the effluent from a single capillary column gas chromatographic injection has been constructed from separate commercial instrument components. Gas chromatography/mass spectrometry (GC/MS) is performed in the conventional manner. The Fourier transform infrared (FTIR) portion of the instrument employs a new technology involving low-temperature deposition of the eluting compounds from the gas chromatograph. This method of infrared sampling produces condensed phase spectra which have bands widths that are somewhat intermediate to room temperature and matrix-isolated spectra. This permits searching of existing large condensed phase libraries for identification purposes. The qualitative capabilities of this instrument are particularly beneficial where isomer specific identifications are necessary. In the case of the polychlorinated biphenyl (PCB) congeners little reliable IR spectral data exists for these compounds. Utilizing the instrumentation described above, high quality spectral data has been accumulated for approximately 130 PCB cogeners/isomers. This library has been used very successfully to identify specific PCB cogeners and isomers in commercial Aroclor mixtures. 10 figs., 2 tabs.

• Research Organization: Oak Ridge Y-12 Plant, TN (United States)
• Sponsoring Organization: USDOE, Washington, DC (United States)
• DOE Contract Number: AC05-84OR21400
• OSTI ID: 10139362
• Report Number(s): Y/DK--883; CONF-920302--6; ON: DE92011887
• Country of Publication: United States
• Language: English

Related Subjects

37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
400102
400105
CHEMICAL ANALYSIS
CHEMICAL AND SPECTRAL PROCEDURES
CHLORINATED AROMATIC HYDROCARBONS
FOURIER TRANSFORM SPECTROMETERS
GAS CHROMATOGRAPHY
INFRARED SPECTRA
ISOMERS
MASS SPECTROSCOPY
SEPARATION PROCEDURES