Transmitted Off Crossed Polarized Light Illumination
Definition/Function:
Charred wood particles in homes are often the result of backdrafting from a fireplace or
wood stove. Charred wood is almost always present in indoor
samples as part of the ambient particle load from outside.
Significance in the Environment:
Charred wood is one of the most common urban and suburban airborne particles. In the
winter in northern latitudes in can be one of the major airborne
particles. In areas where agricultural fields are burned, charred plant material can
become the major airborne contaminant. Proximity to wild fires
is another source of charred wood. It is always best to match the charred plant material
to the plants being burned to confirm the source.
Phytoliths become important in identifying the
plant of origin.
Characteristic Features:
Associated Particles:
References:
