Particulate Matter 2.5

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PM Size & the Respiratory System • Size determines how PM interacts with the system • [1] Nasopharyngeal • Filters out large particles • [2] Tracheobronchial • Larger particles (5 – 10 m) deposit here • [3] Bronchiolar • PM 1-3 m deposits here • [4] Alveolar region • PM < 1 m deposits here
PM Size & the Respiratory System • Both coarse and fine PM can penetrate to lower regions of the lung • Deposited particles may accumulate, react, be cleared or absorbed • The very smallest (PM 0.1 ) particles may enter the blood and travel throughout the body
Page 1 and 2: Particulate Matter 2.5 Human Health
Page 3: M. Lipsett, California OEHHA PM siz
Page 7 and 8: PM 2.5 Sources • Fossil fuel comb
Page 9 and 10: Air Pollutants - Who Is Most At Ris
Page 11 and 12: Adjusted mo T W 1.0 p P t l 0.9 0.8
Page 13 and 14: Air Quality Index ~ PM-2.5 Particul
Page 15 and 16: How Quickly? • Measurable changes
Page 17 and 18: PM 2.5 Long Term Exposure - Chronic
Page 19 and 20: Mortality Risk Ratio Six Cities Coh
Page 21 and 22: 10 g/m 3 PM 2.5 → approximately 6
Page 23 and 24: Data for Death/Illness from short-t
Page 25: Questions? lori.verbrugge@alaska.go

Particulate Matter 2.5

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