Table 2.
Second phase screening for microplastic particles in human placenta, meconium and airborne fallout (0.05–0.5 mm). Negative controls include screening for MPs of the sample preparation instruments and storage containers without the actual tissues (placenta, meconium, maternal stool). PP = polypropylene, PS = polystyrene, PU = polyurethane.
| ID | Sample | Description | Screening for MPs | Type |
|---|---|---|---|---|
| H | Placenta | block 1 × 1 × 1 cm | negative | - |
| I | Placenta | core block 1 × 1 × 1 cm | positive | PP |
| J | Placenta | negative control, sampled in lab | positive | PS |
| K | Meconium | sampled on metal | positive | PP, PS |
| L | Meconium | negative control, sampled in lab | negative | - |
| M | airborne fallout | 5 min air probe from the operating theatre | positive | PU |