Write down the effect of particulate pollutants on the environment.

(N/A) The effect of particulate pollutants is largely dependent on the particle size. Airborne particles such as dust,fumes,and mist are dangerous for human health. Particulate pollutants larger than $5 \ \mu m$ are likely to lodge in the nasal passage,whereas particles of about $1 \ \mu m$ enter into the lungs easily.
Lead was once a major air pollutant emitted by vehicles,with leaded petrol being the primary source of airborne lead emissions. This problem has been mitigated by using unleaded petrol. Lead interferes with the development and maturation of red blood cells.