Table 3.

The percentage recoveries of PAHs extraction by C-18 solid-phase with solvent mixture of dichloromethane : hexane (1 : 2).

PAHs	Amount added (μg/mL)	Retention time	Area	Amount recovered (μg/mL)	% Recovery	% Recovery (mean ± %RSD)
ANT	5.00	18.13	30294	4.58	91.60	89.73 ± 1.82
	5.00	18.13	29865	4.45	89.00
	5.00	18.13	30867	4.43	88.60
FLU	5.00	15.83	102408	4.90	98.00	98.60 ± 0.61
	5.00	15.82	103662	4.96	99.20
	5.00	15.83	103035	4.93	98.60
NAP	5.00	10.47	227059	4.02	80.40	81.47 ± 1.16
	5.00	10.47	231013	4.09	81.80
	5.00	10.47	232143	4.11	82.20
PHE	5.00	18.27	32503	4.23	84.60	84.73 ± 1.66
	5.00	18.27	31580	4.17	83.40
	5.00	18.27	31438	4.31	86.20
PYR	5.00	21.51	17145	4.77	95.40	96.07 ± 1.03
	5.00	21.51	17469	4.86	97.20
	5.00	21.51	17181	4.78	95.60