Table 2 Amounts of PDE-5i consumed in areas served by STP#1 and STP#2 estimated by mass loading, hydraulic flow and bioavailability.
From: Contribution of sewage to occurrence of phosphodiesterase-5 inhibitors in natural water
Catchment area | STP#1 | STP#2 | ||||
|---|---|---|---|---|---|---|
Type of PDE-5i | Sildenafil | Tadalafil | Vardenafil | Sildenafil | Tadalafil | Vardenafil |
Average concentration, ng L−1 | 53 | 12 | 6 | 62 | 16 | 6 |
Mass load, g d−1 | 65 | 15 | 7 | 45 | 11 | 5 |
Bioavailability, ratio* | 0.40 | 0.81 | 0.15 | 0.40 | 0.81 | 0.15 |
Consumption by population, mg d−1 1000 inh−1 | 114 | 82 | 9 | 143 | 114 | 10 |
