Figure 2.
Particle size distribution of SSM and PM; (a) % Volume (b) % Number (c) % Intensity of SSM and (d) % Volume (e) % Number (f) % Intensity of PM.
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.