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Table 2 Predicted Au-NP concentrations in technical and environmental compartments

From: Probabilistic modelling of prospective environmental concentrations of gold nanoparticles from medical applications as a basis for risk assessment

  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
  1. 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