SPECTROSCOPIC ANALYSIS OF SURGICAL SMOKE PRODUCED IN VITRO BY LASER VAPORIZATION OF ANIMAL TISSUES IN A CLOSED GASEOUS ENVIRONMENT

摘要

The surgical smoke is composed by gases, vapors, aerosols, biological fragments and particulate matter. A quantitative analysis of surgical smoke produced in vitro by CO_2 laser vaporization of different fresh animal tissues in closed nitrogen atmosphere was investigated. Using the laser photoacoustic spectroscopy technique, the concentration of acetonitrile, acrolein, ammonia, benzene, ethylene and toluene from surgical smoke was determined. Average concentrations of acetonitrile (190 ppm), acrolein (35 ppm), ammonia (25 ppm), benzene (20 ppm), ethylene (0.41 ppm), and toluene (45 ppm) were measured in the smoke samples. The correlation between gas concentration and laser power, exposure time or the tissue type was investigated.