What are the Health Implications of Different Particle Sizes?
Particles are categorized based on their size into several classifications, such as ultrafine particles (less than 100 nm), fine particles (100 nm to 2.5 µm), and coarse particles (2.5 µm to 10 µm). Ultrafine particles can penetrate cell membranes and enter systemic circulation, potentially causing effects such as inflammation, oxidative stress, and even cardiovascular and neurological damage. Fine and coarse particles primarily affect the respiratory system, with the potential to cause or exacerbate conditions like asthma and chronic obstructive pulmonary disease (COPD).
