Official websites use .gov
A
.gov website belongs to an official
government organization in the United States.
Secure .gov websites use HTTPS
A lock (
) or https:// means you've safely
connected to the .gov website. Share sensitive
information only on official, secure websites.
The surface area of combustion-derived nanoparticles (CDNP) (μm2/cm3) in a home burning bituminous coal in a high stove with a chimney*. Notes:*y-axis represents surface area of CDNP (μm2/cm3), with a range from 0 to 1000; x-axis represents time (h:min:s).
