Table 4: Dissolved phase concentrations (ng·L−1) for each target compound in the three WWTPS under study.

Jul '10Sep '10Nov '10Jan '11March '11May '11Jul '11Frequency (%)Average

WWTP 1
 NPa88.5 ± 0.718.1 ± 1.171.0 ± 5.0209.1 ± 15.377.0 ± 0.989.4 ± 9.7110.0 ± 9.010094.7
 OPa12.6 ± 0.7BQLc9.7 ± 0.795.2 ± 9.217.8 ± 1.111.7 ± 0.923.0 ± 0.985.728.3
 NPEOsa729.4 ± 0.7395.3 ± 22.7958.9 ± 17.3464.3 ± 18.7313.0 ± 12.9303.7 ± 9.3572.0 ± 22.3100533.8
 OPEOsa101.6 ± 0.794.1 ± 4.5569.0 ± 45.9350.4 ± 22.966.9 ± 5.984.2 ± 5.393.9 ± 7.3100194.3
 BPAa12.6 ± 0.7BQLcBQLc9.6 ± 0.9BDLbBQLc25.1 ± 3.242.915.8
 E2a21.3 ± 0.718.2 ± 0.339.2 ± 2.965.4 ± 3.1BQLc8.3 ± 0.514.7 ± 1.385.727.9
 E1a4.5 ± 0.73.9 ± 0.19.7 ± 0.9BDLb8.2 ± 0.5BQLcBDLb57.16.6
 E3a16.4 ± 0.731.9 ± 2.142.1 ± 2.018.7 ± 0.919.2 ± 1.97.7 ± 0.312.8 ± 0.910021.3
 EEaBQLc2.9 ± 0.1BQLcBQLcBQLcBDLbBQLc14.32.9
 DESaBQLcBQLcBQLcBQLcBQLcBQLcBQLc0.00.0

WWTP 2
 NPa31.4 ± 3.149.3 ± 3.312.7 ± 0.395.8 ± 7.517.5 ± 1.115.7 ± 3.956.6 ± 2.310039.9
 OPaBQLc12.9 ± 0.73.1 ± 0.114.9 ± 0.811.4 ± 0.418.5 ± 1.1BDLb71.414.4
 NPEOsa698.0 ± 53.5230.1 ± 13.3534.4 ± 11.9302.5 ± 19.694.0 ± 4.195.8 ± 6.9178.6 ± 12.9100304.8
 OPEOsa187.1 ± 11.794.4 ± 7.9195.8 ± 12.7230.9 ± 21.556.6 ± 3.695.4 ± 8.153.2 ± 4.6100130.5
 BPAa18.1 ± 1.74.9 ± 0.27.4 ± 0.8BQLcBQLc39.5 ± 3.18.0 ± 0.871.415.6
 E2a9.1 ± 0.114.8 ± 0.719.5 ± 1.126.9 ± 1.514.5 ± 1.513.5 ± 1.37.1 ± 0.610015.1
 E1a1.9 ± 0.2BQLc4.9 ± 0.1BQLc5.4 ± 0.4BQLcBQLc42.94.1
 E3a16.1 ± 1.38.3 ± 0.17.2 ± 0.318.5 ± 2.18.9 ± 0.218.0 ± 1.5BDLb85.712.2
 EEaBQLcBQLc14.3 ± 0.6BQLcBDLbBQLcBQLc14.314.3
 DESaBQLcBQLcBQLcBQLcBQLcBQLcBQLc0.00.0

Mean and standard deviation of three determinations; bconcentration below the limit of detection; cconcentration below the limit of quantification.