Laser Generated Air Contaminants

They also contain carbon monoxide polyaromatic hydrocarbons and various toxic gases and vapours.

Laser generated air contaminants.

Heavy metals from etching. Laser generated air contaminants lgacs may be generated when certain class 3b and class 4 lasers beams interact with matter. Benzene from cutting polyvinyl chloride. Laser generated air contaminants polycyclic aromatic hydrocarbons from mode burns on poly methyl methacrylate type polymers.

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. Harmful emissions are typically associated with class 3b or 4 lasers. Fused silica from cutting quartz. Places where irradiances exceed 10 000 w cm2 shall be enclosed to the maximum extent practical and be properly ventilated.

Laser fumes according to carnegie mellon university laser beams are hazardous during the cutting or engraving process because laser generated air contaminants are released. 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. Characteristics of the contaminants depend upon the target material cover gas and beam irradiance.

Laser plume may contain carcinogens mutagens irritants and fine dusts. Particles 0 3um in diameter umd generated during the laser cutting exceeded background particle levels by a factor of ten or more. Plumes may also contain bioaerosols viruses blood fragments and bacteria depending on the type of the procedure. Pac lgac produced during surgical and aesthetic procedures are a result of the vaporization or disruption of tissue at the cellular level.

Plume and airborne contaminants pac. Ansi z136 3 7 4 laser generated airborne contaminants lgac. Laser generated airborne contaminants can form during disruption of tissue cells by heat lasers electrosurgical generators mechanical manipulation rotary devices saws or ultrasonic instruments.