Particulate Matter 2.5
Particulate Matter 2.5
Particulate Matter 2.5
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PM Size & the Respiratory<br />
System<br />
• Size determines how PM<br />
interacts with the system<br />
• [1] Nasopharyngeal<br />
• Filters out large particles<br />
• [2] Tracheobronchial<br />
• Larger particles (5 – 10 m)<br />
deposit here<br />
• [3] Bronchiolar<br />
• PM 1-3 m deposits here<br />
• [4] Alveolar region<br />
• PM < 1 m deposits here
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