Table 3.
Fitting parameters of SSD curves using log-logistic functions (see Material and methods) for diferent plastic particle size classes: large microplastics (LMP, > 100 μm), small microplastics between 10 and 100 μm (SMP-a), small microplastics between 1 and 10 μm (SMP-b), and nanoplastics (NP, < 1 μm).
| Size class | a (mg/L) | b | n | AIC | HC5 (mg/L) | Critical value (mg/L) | Critical value endpoint |
|---|---|---|---|---|---|---|---|
| LMP |
468 (388–548) |
1.13 (0.94–1.33) |
7 | − 34.95 |
16.68 (13.82–19.54) |
44.7 | Gammarus fossarum growth |
| SMP-a |
28.01 (23.22–32.80) |
1.22 (1.03–1.41) |
18 | − 95.69 |
0.76 (0.63–0.89) |
0.19 | Sebastes schlegelii growth |
| SMP-b |
6.00 (4.23–7.78) |
2.23 (1.92–2.55) |
29 | − 145.72 |
0.008 (0.006–0.01) |
0.01 | Crassostrea gigas larval growth of progeny |
| NP |
0.77 (0.54–1.00) |
1.84 (1.52–2.16) |
14 | − 72.15 |
0.003 (0.002–0.004) |
0.0005 | C. gigas larval ingestion rate |