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Size and concentration comparison for microplastics between reported environmental levels and laboratory exposure studies
figure
posted on 2016-06-17, 20:29 authored by Robin LenzRobin Lenz, Kristina Enders, Torkel Gissel NielsenThe
figure compares MP concentration and sizes used in several relevant laboratory
exposure experiments (see references) with a number of environmental
concentrations from studies between 2004 to 2015. The sampled compartments
include surface and subsurface waters in coastal and offshore regions.
Explanation: Exposure studies (fat coloured lines) and observed environmental levels (red diamonds: average concentrations; error bars: min and max concentration). The red line extrapolates the field data with best fit using a power law regression (y=3188⋅x-2.67, 95% confidence intervals as pale red areas). The dotted grey isolines show equal mass concentrations for particles density= 1.04 g⋅cm-3. The X-axis scale is the diameter of the micro beads in exposure experiments and the mesh size used in environmental studies, respectively.
Explanation: Exposure studies (fat coloured lines) and observed environmental levels (red diamonds: average concentrations; error bars: min and max concentration). The red line extrapolates the field data with best fit using a power law regression (y=3188⋅x-2.67, 95% confidence intervals as pale red areas). The dotted grey isolines show equal mass concentrations for particles density= 1.04 g⋅cm-3. The X-axis scale is the diameter of the micro beads in exposure experiments and the mesh size used in environmental studies, respectively.
