Laser Generated Air Contaminants

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

Laser generated air contaminants.

Fused silica from cutting quartz. 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. Laser generated air contaminants polycyclic aromatic hydrocarbons from mode burns on poly methyl methacrylate type polymers. Laser generated air contaminants lgacs may be generated when certain class 3b and class 4 lasers beams interact with matter.

Most compounds detected in the thermal desorption air samples were also detected in the bulk sample and the residue was acidic ph 3. Heavy metals from etching. Plumes may also contain bioaerosols viruses blood fragments and bacteria depending on the type of the procedure. Harmful emissions are typically associated with class 3b or 4 lasers.

Pac lgac produced during surgical and aesthetic procedures are a result of the vaporization or disruption of tissue at the cellular level. Analysis of the plume produced has shown the presence of gaseous toxic compounds bio aerosols dead and live cellular material and viruses. Plume and airborne contaminants pac. 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.

Particles 0 3um in diameter umd generated during the laser cutting exceeded background particle levels by a factor of ten or more. 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. 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.

Places where irradiances exceed 10 000 w cm2 shall be enclosed to the maximum extent practical and be properly ventilated. Characteristics of the contaminants depend upon the target material cover gas and beam irradiance. Benzene from cutting polyvinyl chloride.