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Quantitative in vitro analysis of surgical smoke by laser photocoustic spectroscopy

M. PETRUS1, C. MATEI1, M. PATACHIA1,2, D.C. DUMITRAS1

Affiliation

  1. Department of Lasers, National Institute for Laser, Plasma and Radiation Physics,409 Atomistilor St., PO Box MG-36, 077125, Bucharest, Romania
  2. University of Bucharest, Faculty of Physics, 36-46 Mihail Kogalniceanu Blvd., 050107, Sector 5, Bucharest, Romania

Abstract

CO2 laser photoacoustic spectroscopy is used to detect and monitor gases at low concentrations, in the range of ppb (part per billion) or even lower. In the present paper, chemical compounds of surgical smoke produced in vitro by CO2 laser ablation of fresh animal tissues, in nitrogen or synthetic air atmospheres, were investigated by CO2 laser photoacoustic spectroscopy. A quantitative analysis of some gases from surgical smoke was achieved. Traces in ppm (part per million) range of benzene, ethylene, ammonia, and methanol were detected in the samples which consisted mostly of carbon dioxide and water vapors. The relationships between gas concentrations and laser power, exposure time, atmosphere and the type of tissue were investigated. The CO2 laser photoacoustic spectroscopy system proved once again its efficiency in gas concentration measurement with high sensitivity, over a large span of concentration values..

Keywords

Laser photoacoustic spectroscopy, CO2 laser, Surgical smoke, Benzene, Ethylene, Ammonia, Methanol.

Submitted at: May 23, 2012
Accepted at: July 19, 2012

Citation

M. PETRUS, C. MATEI, M. PATACHIA, D.C. DUMITRAS, Quantitative in vitro analysis of surgical smoke by laser photocoustic spectroscopy, Journal of Optoelectronics and Advanced Materials Vol. 14, Iss. 7-8, pp. 664-670 (2012)