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Problems caused by atmospheric pollutants

Chemistry of the atmosphere • Atmospheric pollutants

Key concepts

What you'll likely be quizzed about

  • An atmospheric pollutant is any gas, particle, or aerosol at harmful concentrations to health, ecosystems, or materials.
  • Key limiting factors include concentration, exposure time, particle size, chemical form, and local meteorology.
  • Weather and topography affect pollutant dispersion and transformation, leading to different impacts in various locations.
  • Short-term peaks cause acute health issues, while long-term exposure leads to chronic environmental changes.

Flashcards

Test your knowledge with interactive flashcards

Effects of ground-level ozone on plants

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Ozone damages plant cells and leaf tissues, reducing photosynthesis and crop yields.

Key notes

Important points to keep in mind

Pollutant harm depends on concentration, exposure time, and chemical form.

SO2 and NOx react to produce acidic compounds causing acid deposition.

NOx plus sunlight produces ground-level ozone and photochemical smog.

Carbon monoxide reduces oxygen transport by binding to hemoglobin.

Fine particulates penetrate deep into lungs, causing long-term health risks.

Ground-level ozone damages respiratory tissues and plant productivity.

Greenhouse gases contribute to climate change, indirectly affecting air quality.

Local weather and topography influence pollutant dispersion and effects.

Short peaks cause acute effects; chronic exposure leads to long-term damage.

Acidic pollutants and oxidants damage materials and buildings.

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