Sample preparat ion
For the analysis, we selected polyolefin objects >2 mm
from the Hawai’i sample. Ropes and fishery objects were
excluded from this analysis. The sample was prepared by
mixing polyolefins from all size fractions from Table 9.3
(see section 9.1.3) according to their mass ratio in the
original raw sample. The sample was then ground in a
cutting mill to