What is the size range for smoke particles?

The size range for smoke particles is predominantly defined as being between 0.01 to 10 micrometers in diameter. This range captures the variety of particulate matter generated by combustion processes, such as those from fires or industrial emissions. Particles within this size range can penetrate deep into the respiratory system when inhaled, posing health risks and leading to respiratory problems.

Particles smaller than 0.01 micrometers are often referred to as ultrafine particles, which can also exist in smoke but are less significant in terms of the larger particulate matter that typically constitutes smoke. Conversely, particles larger than 10 micrometers are generally too large to reach the deeper parts of the lungs, as they tend to get trapped in the upper respiratory tract.

Understanding the size of smoke particles is critical for industrial hygienists when assessing exposure risks and determining appropriate control measures to protect workers and the public from smoke-related health hazards.