Fig. 2.
Frequency and trend of studies (n = 150) on the presence of microplastic particles in freshwater environment in different matrix including water, sediment, water + sediment, water or sediment + biota and water + sediment + biota
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.