The ability of water falling to attract air pollutants

[Tim Wilson]

What is the ability of water running down the face of a solid surface to attract and collect air pollutants, such as, dust and particles?
If you had say a 2 foot by 4 foot surface with water running down the face. of the surface.

 

[Grieverheart]

You must referring to adhesion.Water molecules are polar molecules.This polarity causes water to be attracted to other molecules (and water molecules,called cohetion).