Table 2.
Predicted Au-NP concentrations in technical and environmental compartments
| UK | US | Units | ||||||||
|---|---|---|---|---|---|---|---|---|---|---|
| Mean | Mode | Q15 | Q85 | Mean | Mode | Q15 | Q85 | |||
| STP Effluent | 440 | 360 | 220 | 670 | 140 | 130 | 71 | 200 | pg/L | |
| Surface water | 470 | 270 | 210 | 730 | 4.7 | 4.0 | 2.7 | 6.8 | pg/L | |
| STP sludge | 120 | 130 | 94 | 150 | 150 | 150 | 120 | 170 | μg/kg | |
| Sludge treated soil | 300 | 300 | 230 | 370 | 150 | 150 | 120 | 170 | ng/kg· years | |
| Sediment | 290 | 170 | 130 | 450 | 5.0 | 4.5 | 3.0 | 8.0 | ng/kg·years | |
| Hazardous waste | 77 | 78 | 23 | 130 | 65 | 69 | 20 | 110 | μg/kg | |
| Medical WIP | ||||||||||
| Fly ash | 270 | 30 | 36 | 530 | 260 | 32 | 36 | 530 | μg/kg | |
| Bottom ash | 200 | 25 | 27 | 410 | 200 | 26 | 27 | 400 | μg/kg | |
| Municipal WIP | ||||||||||
| Fly ash | 72 | 70 | 53 | 92 | 39 | 38 | 31 | 47 | μg/kg | |
| Bottom ash | 55 | 52 | 39 | 71 | 30 | 27 | 22 | 37 | μg/kg | |
The mean, mode (most probable values), quantile 15 (Q15) and quantile 85 (Q85) for the predicted concentrations in the technical environmental compartments are provided on the table. Values in italics designate yearly increases in concentrations. Au-NP concentrations in surface water and sediments represent no and complete sedimentation respectively. The results are expressed up to two significant digits