Infrared spectroscopy on smoke produced by cauterization of animal tissue.
In view of in vivo surgical smoke studies a difference-frequency-generation (DFG) laser spectrometer (spectral range 2900-3144 cm(-1)) and a Fourier-transform infrared (FTIR) spectrometer were employed for infrared absorption spectroscopy. The chemical composition of smoke produced in vitro with an electroknife by cauterization of different animal tissues in different atmospheres was investigated. Average concentrations derived are: water vapor (0.87%), methane (20 ppm), ethane (4.8 ppm), ethene (17 ppm), carbon monoxide (190 ppm), nitric oxide (25 ppm), nitrous oxide (40 ppm), ethyne (50 ppm) and hydrogen cyanide (25 ppm). No correlation between smoke composition and the atmosphere or the kind of cauterized tissue was found.
Laser Spectroscopy and Sensing Lab, Institute for Quantum Electronics, ETH Zurich, Schafmattstr. 16, 8093 Zurich, Switzerland. michele.gianella@phys.ethz.ch
Michele
M
Gianella
Markus W
MW
Sigrist
D000818:Animals; D002248:Carbon Monoxide / Q000032:analysis; D002425:Cautery / Q000379:methods*; D004867:Equipment Design; D004980:Ethane / Q000032:analysis; D006856:Hydrogen Cyanide / Q000032:analysis; D008697:Methane / Q000032:analysis; D009569:Nitric Oxide / Q000032:analysis; D009609:Nitrous Oxide / Q000032:analysis; D012906:Smoke / Q000032:analysis*; D013053:Spectrophotometry / Q000379:methods; D017550:Spectroscopy, Fourier Transform Infrared / Q000379:methods*
D012906:Smoke; D006856:Hydrogen Cyanide; D009569:Nitric Oxide; D002248:Carbon Monoxide; D009609:Nitrous Oxide; D004980:Ethane; D008697:Methane