Laser Generated Air Contaminants

Plumes may also contain bioaerosols viruses blood fragments and bacteria depending on the type of the procedure.

Laser generated air contaminants.

Hydrogen cyanide and benzene from cutting of aromatic polyamide fibers. Particles 0 3um in diameter umd generated during the laser cutting exceeded background particle levels by a factor of ten or more. Laser generated airborne contaminants can form during disruption of tissue cells by heat lasers electrosurgical generators mechanical manipulation rotary devices saws or ultrasonic instruments. Plume and airborne contaminants pac.

Laser generated air contaminants lgacs when the beam irradiance exceeds 1 000 w cm2 an evaluation shall be performed by an industrial hygienist to identify engineering controls for laser generated air contaminants. Heavy metals from etching. Nonetheless when biological tissue is subjected to laser radiation the target cells can be vaporized resulting in the aerosolization of their contents and the subsequent exposure of health care workers to laser generated air contaminants lgacs. Most compounds detected in the thermal desorption air samples were also detected in the bulk sample and the residue was acidic ph 3.

Analysis of the plume produced has shown the presence of gaseous toxic compounds bio aerosols dead and live cellular material and viruses. Harmful emissions are typically associated with class 3b or 4 lasers. Laser generated air contaminants lgacs may be generated when certain class 3b and class 4 lasers beams interact with matter. Characteristics of the contaminants depend upon the target material cover gas and beam irradiance.

Laser fumes according to carnegie mellon university laser beams are hazardous during the cutting or engraving process because laser generated air contaminants are released. Technologists are exposed to laser generated air contaminants lgacs orelectrosurgicalsmoke 1 thelasersurgicalsmoke or plume is generated as the result of target cells being heated to the point of boiling causing the membranes to rupture as well as pyrolysis and combustion of the target material 2. Laser plume may contain carcinogens mutagens irritants and fine dusts. They also contain carbon monoxide polyaromatic hydrocarbons and various toxic gases and vapours.

Benzene from cutting polyvinyl chloride. Ansi z136 3 7 4 laser generated airborne contaminants lgac. Fused silica from cutting quartz.