Particulate matter (PM10 and PM2.5): Environmental effects
Description
PM10 may affect animals in the same way as it affects humans. Particles in general, not specifically PM10 or PM2.5, affect the aesthetics and utility of areas through visibility reduction and may affect buildings and vegetation. The specific effect of particles depends on their composition, concentration and the presence of other pollutants such as acid forming gases.
Entering the environment
Particles in the air affect both the quality of the air and visibility. Once in the air particulate matter generally takes a long time to settle. The particulates may be washed from the air by rain or snow. When they settle on land they may settle permanently or be re-entrained. In water particulates may settle, dissolve or both.
Where it ends up
PM10 and PM2.5 are very fine and light and are therefore easily entrained into the air by wind or disturbances. Chemical changes may occur, as may reactions with other substances, depending on the composition of the particles. Particles may stick together or break apart, changing the size distribution over time.
Environmental guidelines
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Key
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