TABLE 1.
Average mass per particle by gravimetry and size characteristics and distribution using FESEM.
| Test materials | Size characteristic | 10th percentile | 50th percentile | 90th percentile | N particles |
|---|---|---|---|---|---|
| AFS (0.18 pg/particle) a |
Length (µm) | 1.77 | 2.99 | 6.13 | 346 |
| Width (µm) | 1.22 | 1.96 | 3.71 | ||
| Average diameter (µm) | 1.58 | 2.55 | 5.18 | ||
| Equivalent diameter (µm) | 1.44 | 2.3 | 4.33 | ||
| Aspect ratio | 1.24 | 1.43 | 1.88 | ||
| AFM (1.60 pg/particle) a |
Length (µm) | 4.41 | 6.62 | 11.33 | 643 |
| Width (µm) | 3.06 | 4.29 | 6.52 | ||
| Average diameter (µm) | 3.91 | 5.68 | 9.27 | ||
| Equivalent diameter (µm) | 1.54 | 3.22 | 5.97 | ||
| Aspect ratio | 1.28 | 1.54 | 2.05 | ||
| HDPE (0.05 pg/particle) a |
Length (µm) | 1.97 | 4.13 | 8.36 | 834 |
| Width (µm) | 1.22 | 2.81 | 5.23 | ||
| Average diameter (µm) | 1.71 | 3.6 | 7.05 | ||
| Equivalent diameter (µm) | 1.54 | 3.22 | 5.97 | ||
| Aspect ratio | 1.23 | 1.49 | 2.03 | ||
| AFS–HDPE | Length (µm) | 2.08 | 4.01 | 8.24 | 625 |
| Width (µm) | 1.39 | 2.69 | 5.27 | ||
| Average diameter (µm) | 1.8 | 3.45 | 6.89 | ||
| Equivalent diameter (µm) | 1.6 | 2.99 | 5.84 | ||
| Aspect ratio | 1.25 | 1.49 | 2.00 | ||
| AFM–HDPE | Length (µm) | 2.31 | 5.1 | 10.69 | 458 |
| Width (µm) | 1.65 | 3.43 | 6.55 | ||
| Average diameter (µm) | 2.00 | 4.46 | 8.84 | ||
| Equivalent diameter (µm) | 1.79 | 4.01 | 7.54 | ||
| Aspect ratio | 1.22 | 1.44 | 1.93 |
a
Average mass of the particles determined using gravimetry.