笑気から生成するNOxによる手術室内の空気の汚染の可能性 : その1,紫外線照射によるNOx発生

概要

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Photo-degradation of nitrous oxide gas by ultra violet ray is reported. This report is a preliminary one of the studies concerning the generation of NOx by high energy attack…such as electric surgical knife or X-ray.…on nitrous oxide in relation to operating room air pollution.Nitrous oxide gas mixtures of various concentration in air or oxygen were irradiated by mercury lamp having UV of 2537A at stationary or folowing state in a small vessel. Small samples of resultant gas in the irradiation zone were collected for detecting their NOx concentration with CLD method or Saltzman Reagent.When the concentration of nitrous oxide was lower than approximately 7%, the NOx concentration hardly reached a level of 0.1ppm with a little fluctuation in its figure according to nitrous oxide concentration. In case of much higher concentration of nitrous oxide such as 30% or more, the conentration of NOx was high and remarkably affected by numbers of irradiation lamps as well as exposure period.The highest NOx concentration recorded 1.25ppm which was comprised of 0.19 and 1.06ppm of NO and NO_2,respectively, after 30 minutes irradiation with three lamps.
日本医療機器学会の論文
1981-02-01