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.
Characterization of prepared polypropylene microplastics with two particle sizes, approximately 5 and 10–50 µm. (a,e) Average size and distribution of the particle size using a particle size analyzer. (b,c,f,g) The actual size of the particles was measured using a 3D profile and SEM. (d,h) The chemical characters of the particles were verified using Raman spectroscopy. Data are presented as mean ± standard deviation. Scale bars: 50 µm for black and 10 μm for white.
