What is the size range of dust particles?

Dust particles vary significantly in size, and understanding their range is crucial for industrial hygiene and health assessments. The correct choice identifies the size range of dust particles that are often encountered in various environments. Specifically, particles that are within the range of 0.1 to 30 micrometers are classified as dust.

Dust particles in this size range can be inhaled and pose respiratory health risks, as they can penetrate deep into the lungs. Particles larger than 30 micrometers are generally too large to be inhaled and are more likely to settle out of the air quickly, while particles smaller than 0.1 micrometers, such as those that fall within the nanoparticle range, tend to behave differently in the air and may be subject to different health effects due to their size and chemical properties.

This understanding is essential for professionals in industrial hygiene as they assess exposure risks and implement appropriate controls to protect worker health. It also informs regulations regarding permissible exposure levels in occupational settings, ensuring a safer work environment.