Particulate Matter 2.5
Particulate Matter 2.5
Particulate Matter 2.5
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Data for Death/Illness from<br />
short-term exposure to PM <strong>2.5</strong><br />
• clear, consistent, significant association<br />
when mean 24-hr PM <strong>2.5</strong> concentrations<br />
are:<br />
• below 20 g/m 3 : increased mortality<br />
• between 15-21 g/m 3 : increased<br />
hospital admissions, respiratory<br />
symptoms<br />
• New “health-based” 24-hr NAQQS = 35<br />
g/m 3
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