Microplastics are known to collect in ecosystems and nanoplastics occur from the breaking down of microplastics. Nanoplastics are plastic particles of sizes less than 100 nm and when they are in water, they are dispersed in a colloidal form. Nanoplastics might be more prevalent than microplastics, but it is hard to analyze and study them in-depth due to their size. In zebrafish, however, nanoplastics have been found in various organs including the brain, which may be an indicator that it crosses the blood-brain barrier.
Click here for original story, Interaction between nanoplastics and pectin, a water-soluble polysaccharide
Source: Phys.org