How urban grime affects chemical reactions in cities

Many city surfaces are coated with a layer of soot, pollutants, metals, organic compounds and other molecules known as'urban grime.' Chemical reactions that occur in this complex milieu can affect air and water quality. Now, researchers have taken a closer look at urban grime collected from two U.S. cities, revealing for the first time that the material absorbs sunlight and therefore might participate in photochemical reactions.

from Top Technology News -- ScienceDaily https://ift.tt/3iyZeGD