Table 5: Sludge and particulate matter (solid fractions) concentrations (ng·g−1) for each target compound in both WWTPS under study.

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

WWTP 1
 NPa216.1 ± 9.1479.1 ± 22.752.7 ± 2.1211.3 ± 5.2324.5 ± 6.7175.9 ± 12.322.1 ± 0.2100211.7
 OPa49.3 ± 1.422.2 ± 1.239.1 ± 3.020.7 ± 2.08.7 ± 0.614.0 ± 2.322.3 ± 1.010025.2
 NPEOsa461.1 ± 15.7890.1 ± 35.1125.4 ± 11.1471.5 ± 8.192.1 ± 6.792.4 ± 3.3451.4 ± 10.1100369.1
 OPEOsa74.5 ± 6.055.9 ± 1.721.9 ± 1.2190.1 ± 9.525.1 ± 1.5129.3 ± 9.144.0 ± 1.310077.3
 BPAa0.9 ± 0.1BQLc7.7 ± 0.7BQLcBQLc2.5 ± 0.27.9 ± 0.557.14.8
 E2a10.1 ± 1.05.1 ± 0.314.1 ± 0.9BQLc17.9 ± 1.420.6 ± 1.639.1 ± 1.185.717.8
 E1aBQLcBQLc7.5 ± 0.3BQLc1.7 ± 0.1BQLc3.2 ± 0.342.94.1
 E3aBQLcBQLcBQLcBQLcBQLcBQLc0.3 ± 0.014.30.3
 EEa27.1 ± 2.121.1 ± 2.022.0 ± 1.75.9 ± 0.438.9 ± 2.19.3 ± 0.542.0 ± 2.710023.8
 DESaBQLcBQLc3.0 ± 0.4BQLc0.9 ± 0.111.5 ± 0.7BQLc42.95.1

WWTP 2
 NPa91.0 ± 5.0101.2 ± 7.9370.2 ± 26.3250.1 ± 9.327.7 ± 2.163.0 ± 1.132.0 ± 1.8100133.6
 OPa60.1 ± 2.538.1 ± 3.135.1 ± 2.250.9 ± 1.712.5 ± 0.216.7 ± 1.371.2 ± 0.910040.7
 NPEOsa240.9 ± 19.6500.4 ± 32.3612.1 ± 19.196.1 ± 1.1218.3 ± 15.5683.4 ± 4.5403.9 ± 27.1100393.6
 OPEOsa311.8 ± 6.343.2 ± 2.1104.0 ± 7.144.8 ± 2.347.5 ± 2.5191.0 ± 7.0161.6 ± 3.3100129.1
 BPAaBQLcBQLc15.9 ± 0.92.7 ± 0.21.9 ± 0.1BQLc 7.6 ± 0.771.46.8
 E2a1.7 ± 0.27.2 ± 0.333.9 ± 1.021.1 ± 1.17.7 ± 0.173.7 ± 3.21.5 ± 0.110021.0
 E1a4.3 ± 0.2BQLc5.0 ± 0.3BQLc4.5 ± 0.11.5 ± 0.1BQLc57.13.8
 E3aBQLcBQLcBQLcBQLcBQLcBQLcBQLc00.0
 EEa111.1 ± 9.356.1 ± 2.1121.7 ± 1.313.1 ± 0.425.8 ± 2.183.1 ± 3.955.9 ± 3.310066.7
 DESaBQLcBQLc17.5 ± 0.4BQLcBQLcBQLc3.8 ± 0.328.610.7

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

WWTP 1
 NPa198.6 ± 5.3754.3 ± 39.1105.7 ± 4.7390.4 ± 33.3401.6 ± 30.7200.0 ± 15.990.9 ± 3.4100305.9
 OPa22.7 ± 0.950.0 ± 2.919.9 ± 1.1120.4 ± 8.068.1 ± 4.330.5 ± 0.911.6 ± 1.010050.1
 NPEOsa618.3 ± 40.2391.8 ± 19.593.6 ± 6.1290.5 ± 17.4214.2 ± 16.1183.5 ± 12.0207.9 ± 10.6100285.7
 OPEOsa99.2 ± 3.969.6 ± 3.1BQLc78.9 ± 7.033.9 ± 1.940.7 ± 2.160.8 ± 5.985.763.9
 BPAa3.7 ± 0.212.3 ± 0.8BQLcBQLcBQLcBQLc12.7 ± 0.642.99.6
 E2a21.5 ± 2.79.0 ± 0.751.7 ± 0.629.5 ± 3.37.1 ± 2.031.8 ± 1.350.3 ± 3.010028.7
 E1a22.5 ± 0.914.0 ± 0.9BQLc5.1 ± 0.4BQLc11.0 ± 0.8BQLc57.113.2
 E3aBQLcBQLcBQLc3.1 ± 0.1BQLcBQLcBQLc14.33.1
 EEa14.0 ± 0.7BQLc7.7 ± 0.4BQLc105.1 ± 7.812.9 ± 1.019.1 ± 0.571.431.8
 DESa14.3 ± 1.0BQLc6.3 ± 0.3BQLc10.4 ± 0.4BQLcBQLc42.910.3

WWTP 2
 NPa129.2 ± 7.9212.4 ± 3.9209 ± 9.6301.8 ± 19.163.6 ± 2.9331.9 ± 20.199.5 ± 1.8100192.5
 OPa34.8 ± 0.741.6 ± 2.949.0 ± 3.369.7 ± 3.85.0 ± 0.222.9 ± 1.417.7 ± 0.910034.4
 NPEOsa89.5 ± 5.3350.1 ± 3.1189.6 ± 10.678.0 ± 2.0189.2 ± 4.91003 ± 61.9106.8 ± 14.7100286.6
 OPEOsa129.6 ± 11.851.0 ± 2.1128.4 ± 5.177.1 ± 0.931.7 ± 0.959.7 ± 5.1184.6 ± 3.9100100.4
 BPAa21.5 ± 1.5BQLcBQLcBQLc3.9 ± 0.6BQLcBQLc28.612.7
 E2a33.0 ± 2.0BQLc33.7 ± 2.922.7 ± 0.714.6 ± 0.444.8 ± 0.725.1 ± 3.385.729.0
 E1a13.5 ± 0.35.9 ± 0.321.3 ± 2.0BQLcBQLc32.7 ± 0.85.5 ± 0.257.115.8
 E3aBQLcBQLcBQLcBQLcBQLcBQLcBQLc00.0
 EEa33.9 ± 0.912.0 ± 0.175.9 ± 2.729.0 ± 3.191.8 ± 2.929.4 ± 0.5BQLc85.745.3
 DESa4.1 ± 0.3BQLc23.7 ± 2.0BQLcBQLc6.9 ± 0.1BQLc42.911.6

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