Lung
Outdoor Air Pollutants
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Outdoor Air Pollutants
, Air Pollution, Ozone, Particulate Matter Pollution
See Also
Air Quality Index
(AQI)
Occupational Lung Disease
Pathophysiology
Air Pollutants monitored by the EPA as part if
Air Quality Index
Carbon Monoxide
Nitrogen Dioxide
Sulfur Dioxide
Lead
See
Lead Toxicity
Ozone
NAAQS
: 0.075 ppm over 8 hour averaging time (or 0.12 ppm over 1 hour averaging time)
Formed from reaction between volatile organics (gasoline, chemicals, paints) and nitrogen oxide (combustion exhaust)
Associated with respiratory irritation, diminished lung function and
Asthma Exacerbation
Small Particulate Matter (size <2.5 um)
NAAQS
: 15 mcg/m3 over 1 year averaging time (or 35.0 mcg/m2 over 24 hour averaging time)
Sources include smoke, soot, liquid droplets from combustion exhaust
Associated with
Asthma
/
COPD
exacerbation and increased all cause mortality, especially cardiac (MI,
Arrhythmia
, CHF, CVA)
Large Particulate Matter (size <10 um)
NAAQS
: 150 mcg/m3 over 24 hour averaging time
Sources include larger dust and bioaerosols from agriculture and construction
Same associate conditions as with smaller particulate matter exposure
Resources
EPA AirNow
http://airnow.gov/
References
Jerrett (2009) N Engl J Med 360(11): 1085-95 [PubMed]
Laumbach (2010) Am Fam Physician 81(2): 175-82 [PubMed]
Pope (2009) N Engl J Med 360(4): 376-86 [PubMed]
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