Analysis of microgram quantities of organic vapors by combined capillary-column gas chromatography and vapor phase infrared spectrometry

Brady, Robert F.

doi:10.1021/ac60358a066

Anal. Chem.

1975

DOI: 10.1021/ac60358a066

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Analysis of microgram quantities of organic vapors by combined capillary-column gas chromatography and vapor phase infrared spectrometry

Robert F. Brady¹

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2003

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Ultraviolet and infrared spectroscopy for effluent analysis in a molten salt electrochemical cell

Moore

Pellin

Calaway

et al. 2003

Review of Scientific Instruments

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An apparatus that combines gas phase spectroscopy over two wavelength ranges for analysis of effluent from a molten salt electrochemical cell is described. The cell is placed in a quartz tube that is sealed at the top with a cap containing feedthrus for power, thermometry, and gas flow. A resistance furnace brings the cell assembly to the desired temperature while the cap remains cooled by water. Inert gas continually purges the cell headspace carrying effluent from the electrolysis sequentially through two gas cells, one in a Fourier transform infrared (FTIR) spectrometer and one in a fiber-optic coupled ultraviolet visible spectrometer. Strong vibrational absorptions in the IR can easily identify common effluent components such as HCl, CO, CO2, and H2O. Electronic bands can identify IR-inactive molecules of importance including Cl2 and O2. Since the absorptivity of all of these species is known, determinations of the gas concentration can be made without using standards. Spectra from the electrolysis of molten MgCl2 are shown and discussed, as well as the limit of detection and inherent time resolution of the apparatus as implemented.

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Ultraviolet and infrared spectroscopy for effluent analysis in a molten salt electrochemical cell

Moore

Pellin

Calaway

et al. 2003

Review of Scientific Instruments

View full text Add to dashboard Cite

show abstract

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Analysis of microgram quantities of organic vapors by combined capillary-column gas chromatography and vapor phase infrared spectrometry

Cited by 1 publication

References 17 publications

Ultraviolet and infrared spectroscopy for effluent analysis in a molten salt electrochemical cell

Ultraviolet and infrared spectroscopy for effluent analysis in a molten salt electrochemical cell

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