Fig. 3: Comparison of both samplers (low-volume (LVS) and high-volume (HVS) sampler) based on the results of selected polymer clusters across the seven transects (T1–T7) for the >10 µm fraction.

a Polyethylene terephthalate cluster (C-PET) and b polystyrene cluster (C-PS) in ng m−3. ∆ = concentration of polymer clusters might be influenced by secondary contamination. * = detected, not quantifiable.