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Air Quality Assessment in Populated Area, Houston

Study on NOx and SO2 concentrations in Houston urban areas, focusing on outdoor pollution sources, common pollutants, and population impact. Analysis shows acceptable NOx levels but emphasizes the need for standards considering population density and the heat island effect.

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Air Quality Assessment in Populated Area, Houston

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  1. Air Quality Assessment in Populated Area, Houston Focused on NOx & SO2 Eon S. Lee

  2. Order • Outdoor Pollution Source • Common Pollutants in Urban Area • Population & NOx Distribution • Annual NOx Concentration • Annual SO2 Concentration • Annual NOx & SO2 Concentration • Conclusion

  3. Outdoor Pollution Source Incomplete Combustion Industrial Emission (NOx, SO2) Transportation (NOx, SO2)

  4. Common Pollutants in Urban Area • A complex mixture including varying proportions of air, pollutants, humidity and allergens. • Ozone, generated by reaction of NOx; NO2 +O2 NO +O3 • SO2, Acid rain, Toxic (not focused) • Heat Island Effect • Occurs in the middle of Houston • 2.1 million people exposed. • Causes cancer and bronchial diseases

  5. Population & NOx Distribution

  6. NOx emission by year

  7. SO2 Emission by year

  8. Annual NOx & SO2 Concentration

  9. Conclusion • Overall NOx concentration is acceptable. • Less considered for SO2 concentration. • Necessary to make air quality standards for consider building-concentrated area with large population/area ratio. • Apply the heat island effect. • Personal protection.

  10. Any Question?

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