Nanoparticles: Sources of Nanoparticles

Click to view full size

Three major types:

• Naturally occurring
• Incidental
• Engineered

Naturally Occurring:

• Sea spray
• Mineral composites
• Volcanic ash
• Viruses

Incidental Nanoparticles:

• Cooking smoke
• Diesel exhaust
• Welding fumes
• Industrial effluents
• Sandblasting