Evaluation of the Presence of Endocrine-Disrupting Compounds in Dissolved and Solid Wastewater Treatment Plant Samples of Gran Canaria Island (Spain)

Table 4

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

	Jul '10	Sep '10	Nov '10	Jan '11	March '11	May '11	Jul '11	Frequency (%)	Average
WWTP 1
NP^a	88.5 ± 0.7	18.1 ± 1.1	71.0 ± 5.0	209.1 ± 15.3	77.0 ± 0.9	89.4 ± 9.7	110.0 ± 9.0	100	94.7
OP^a	12.6 ± 0.7	BQL^c	9.7 ± 0.7	95.2 ± 9.2	17.8 ± 1.1	11.7 ± 0.9	23.0 ± 0.9	85.7	28.3
NPEOs^a	729.4 ± 0.7	395.3 ± 22.7	958.9 ± 17.3	464.3 ± 18.7	313.0 ± 12.9	303.7 ± 9.3	572.0 ± 22.3	100	533.8
OPEOs^a	101.6 ± 0.7	94.1 ± 4.5	569.0 ± 45.9	350.4 ± 22.9	66.9 ± 5.9	84.2 ± 5.3	93.9 ± 7.3	100	194.3
BPA^a	12.6 ± 0.7	BQL^c	BQL^c	9.6 ± 0.9	BDL^b	BQL^c	25.1 ± 3.2	42.9	15.8
E2^a	21.3 ± 0.7	18.2 ± 0.3	39.2 ± 2.9	65.4 ± 3.1	BQL^c	8.3 ± 0.5	14.7 ± 1.3	85.7	27.9
E1^a	4.5 ± 0.7	3.9 ± 0.1	9.7 ± 0.9	BDL^b	8.2 ± 0.5	BQL^c	BDL^b	57.1	6.6
E3^a	16.4 ± 0.7	31.9 ± 2.1	42.1 ± 2.0	18.7 ± 0.9	19.2 ± 1.9	7.7 ± 0.3	12.8 ± 0.9	100	21.3
EE^a	BQL^c	2.9 ± 0.1	BQL^c	BQL^c	BQL^c	BDL^b	BQL^c	14.3	2.9
DES^a	BQL^c	BQL^c	BQL^c	BQL^c	BQL^c	BQL^c	BQL^c	0.0	0.0
WWTP 2
NP^a	31.4 ± 3.1	49.3 ± 3.3	12.7 ± 0.3	95.8 ± 7.5	17.5 ± 1.1	15.7 ± 3.9	56.6 ± 2.3	100	39.9
OP^a	BQL^c	12.9 ± 0.7	3.1 ± 0.1	14.9 ± 0.8	11.4 ± 0.4	18.5 ± 1.1	BDL^b	71.4	14.4
NPEOs^a	698.0 ± 53.5	230.1 ± 13.3	534.4 ± 11.9	302.5 ± 19.6	94.0 ± 4.1	95.8 ± 6.9	178.6 ± 12.9	100	304.8
OPEOs^a	187.1 ± 11.7	94.4 ± 7.9	195.8 ± 12.7	230.9 ± 21.5	56.6 ± 3.6	95.4 ± 8.1	53.2 ± 4.6	100	130.5
BPA^a	18.1 ± 1.7	4.9 ± 0.2	7.4 ± 0.8	BQL^c	BQL^c	39.5 ± 3.1	8.0 ± 0.8	71.4	15.6
E2^a	9.1 ± 0.1	14.8 ± 0.7	19.5 ± 1.1	26.9 ± 1.5	14.5 ± 1.5	13.5 ± 1.3	7.1 ± 0.6	100	15.1
E1^a	1.9 ± 0.2	BQL^c	4.9 ± 0.1	BQL^c	5.4 ± 0.4	BQL^c	BQL^c	42.9	4.1
E3^a	16.1 ± 1.3	8.3 ± 0.1	7.2 ± 0.3	18.5 ± 2.1	8.9 ± 0.2	18.0 ± 1.5	BDL^b	85.7	12.2
EE^a	BQL^c	BQL^c	14.3 ± 0.6	BQL^c	BDL^b	BQL^c	BQL^c	14.3	14.3
DES^a	BQL^c	BQL^c	BQL^c	BQL^c	BQL^c	BQL^c	BQL^c	0.0	0.0

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