Dr. Anne Marie Mahon:

Some microplastics are small, depending on the polymer type. They can also be light and can be dispersed into the atmosphere. Some researchers in Paris have examined the atmospheric fallout of particles and found that it can be significant. I included the table in my presentation to highlight that following industrial processes or any processes, many microplastics, from sources such as tyre dust, can be transported through the air by wind before arriving elsewhere later. It is important to acknowledge that pathway.