Environmental Studies(ES)

ENVIRONMENTAL STUDIES

Lesson 15:Environmental pollution

Effects of air pollution on materials

• Air pollutants break down the exterior paint on cars and houses.
  
• Discolored monuments, historic buildings, marble statues, other heritage and natural beauty sites.
  
  

Main agents of air pollution	Material affected	Kind of damage
SOX – and other acids	Metals	Rusting
SOX, NO2 acids, and particulates	Textile	Rashes on the body and deformation
SO2, H2S, O3 and sticky particulates	Paints	Discolouration and surface damage
HF acidic vapours	Ceramics	Changes in surface structure
Ozone oxidants	Rubber	Cracking and weakening
SOX , and other acidic vapours and sulphur oxides	Building materials, skills and paper	Loss of coat of paint, rust, dustiness, surface damage, and creases