Table 3.
Grouping of MeOx ENMs based on dissolution results in PSF, Gamble, DMEM, and water (24 h of incubation, 100 mg/L initial concentration) using the screening criteria/categorisation approach from OECD ENV/JM/MONO (2015)44. (<LOD = below the limit of detection).
| MeOx (Initial Concentration) | Media | High (>70%) | Moderate (10–70%) | Low (1–10%) | Negligible (<1%) |
|---|---|---|---|---|---|
| nano-ZnO (100 ppm) | Water | ZnO, 2.83% (2.27 mg/L) | |||
| DMEM | ZnO, 18.5% (14.9 mg/L) | ||||
| Gamble | ZnO, 4.62% (3.71 mg/L) | ||||
| PSF | ZnO, 91.2% (73.3 mg/L) | ||||
| nano-MnO2 (100 ppm) | Water | MnO2, 0.03% (0.02 mg/L) | |||
| DMEM | MnO2, 0.76% (0.48 mg/L) | ||||
| Gamble | MnO2, <LOD | ||||
| PSF | MnO2, 3.88% (2.45 mg/L) | ||||
| nano-CeO2 (100 ppm) | Water | CeO2, 1.11% (0.90 mg/L) | |||
| DMEM | CeO2, 0.36% (0.29 mg/L) | ||||
| Gamble | CeO2, 0.01% (<0.01 mg/L) | ||||
| PSF | CeO2, 0.02% (0.01 mg/L) |