Fig. 1: MP size distributions in various water matrices around the globe.
From: Advanced nanobubble flotation for enhanced removal of sub-10 µm microplastics from wastewater

a Percentage composition of MPs in the influent (inner circle) and effluent (outer circle) of wastewater treatment facilities worldwide. b Size distribution of MPs in surface water locations globally. *Data extracted from figures in referenced studies using WebPlotDigitizer.v.4.885.