Air pollution mask. View of the face of a cyclist wearing a mask which protects against air pollution. The main source of air pollution in cities is from car exhausts. Cars produce harmful gases such as nitrogen oxides,sulphur oxides,carbon monoxide and ozone. They also emit unburnt hydrocarbons,lead fumes and partially burnt microscopic particles of soot. Using a filter,masks like this help to remove the larger pollutants,but gases will still have an effect. It has been shown that there is a higher incidence of bronchitis in areas with heavy air pollution | |
Licence : | Droits gérés |
Crédit: | Science Photo Library / Tek Image |
Taille de l’image : | 4196 px × 4213 px |
Model Release : | Disponible |
Property Release : | Non requis |
Restrictions : | - |