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Gas Phase Optoacoustic Spectra and Raman Spectra of Some Chlorinated Pollutants

  • Joong-Gil Choi (Department of Chemistry, Yonsei University) ;
  • Jin-soo Hwang (Department of Chemistry, Yonsei University) ;
  • Paeng Ki-Jung (Department of Chemistry, Yonsei University) ;
  • Gerald J. Diebold (Department of Chemistry, Brown University,)
  • Published : 1993.02.20

Abstract

Laser optoacoustic technique has been employed to obtain the gas phase absorption spectra of 1-chloronaphthalene, 3-chlorobiphenyl, and 2,5,2'-trichlorobiphenyl in conjunction with a gas chromatograph and a Helmholtz resonator at the various $CO_2$ laser wavelengths. Raman spectra of 1-chloronaphthalene, 4-chlorobiphenyl, and 4,4'-dichlorobiphenyl in condensed phase have been also obtained. The optoacoustic measurement of the infrared absorption in gas phase has been shown to be of value in monitoring the environmental pollutants.

Keywords

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