Table 2.

Slopes, correlation coefficients, and extracted percentages of the performed depletion experiments according to Zimmermann et al. [25] for samples containing 19 mL of water and an initial concentration of 50 ng L⁻¹ PAHs for the first extraction by a classic SPME fiber (100 μm × 10 mm, 0.6 μL) and a PAL SPME Arrow (250 μm × 20 mm, 10.2 μL)

Compound	SPME fiber			PAL SPME Arrow
	Slope	R 2	E (%)	Slope	R 2	E (%)
Naphthalene	−0.023	0.9903	5.2	−0.084	0.9915	17.5
Acenaphthylene	−0.028	0.9842	6.2	−0.134	0.9980	26.6
Acenaphthene	−0.041	0.9946	9.0	−0.144	0.9907	28.2
Fluorene	−0.050	0.9927	10.9	−0.146	0.9902	28.6
Phenanthrene	−0.060	0.9972	12.9	−0.163	0.9959	31.4
Anthracene	−0.071	0.9930	15.1	−0.225	0.9943	40.5
Pyrene	−0.097	0.9956	20.1	−0.254	0.9993	44.3
Fluoroanthene	−0.096	0.9972	19.9	−0.239	0.9996	42.3
1,2-Benzanthracene	−0.137	0.9925	27.1	−0.307	0.9946	50.7
Chrysene	−0.071	0.9235	15.1	−0.278	0.9871	43.4
Benzo(b)fluoroanthene	−0.172	0.9938	32.7	−0.317	0.9964	51.8
Benzo(k)fluoroanthene	−0.176	0.9878	33.4	−0.412	0.9937	61.3
Benzo(a)pyrene	−0.156	0.9958	30.2	−0.330	0.9854	53.2
Indeno(1,2,3 cd)pyrene	−0.159	0.9845	30.7	−0.367	0.9897	57.0
Dibenz(ah)anthracene	−0.142	0.9926	27.8	−0.465	0.9994	65.7
Benzo(ghi)perylene	−0.140	0.9967	27.6	−0.418	0.9999	61.9