Wet Road Agglomerate
The spray that comes up from the road when it is wet
contains a variety of particle types that coelese as the water evaporates.
The result is a agglomeration of particles typical of road dusts and particles that
have settled on the road. This particle contains tire wear (black),
pollens (greenish in this image), concrete particles (white in polarized light), and
a silica phytolith (glass-like fiber).
Transmitted Circular Polarized Light Illumination
Definition/Function:
Wet road agglomerates are particle clusters that include tire wear, road debris,
pollens, and other particles commonly
found on the surface of roads. The road debris may be from asphalt or cement roads.
These particles are the road spray
residues formed when the road is wet and the normal road debris is agglomerated rather
than free individual particles.
Significance in the Environment:
These particles indicate an essentially direct route for air to the indoor environment.
Typically it's an open window or
proximity to an exterior door.
Characteristic Features:
Associated Particles:
References:
