Multiple PAHs’ Detection under CDOM Interference Based on Excitation-Emission Matrix and Interval Selection

Table 4

Results of the recovery tests for four PAH measurements.

Spiked PAHs	Original concentration	Added concentration	Measured concentration	Recovery (%)	Average recovery (%)
FLU	9.88 ± 0.19	2.38	12.39 ± 0.31	105.4	103.3
	9.88 ± 0.19	1.19	11.17 ± 0.22	108.4
	9.88 ± 0.19	0.71	10.57 ± 0.17	97.2
PYR	10.16 ± 0.23	2.38	12.75 ± 0.20	109.0	103.2
	10.16 ± 0.23	1.19	11.32 ± 0.19	97.7
	10.16 ± 0.23	0.71	10.89 ± 0.32	102.8
PHE	9.84 ± 0.39	2.38	12.39 ± 0.14	107.2	107.4
	9.84 ± 0.39	1.19	11.14 ± 0.21	109.5
	9.84 ± 0.39	0.71	10.59 ± 0.23	105.6
BaP	9.96 ± 0.14	2.38	12.30 ± 0.18	98.2	101.4
	9.96 ± 0.14	1.19	11.19 ± 0.17	103.5
	9.96 ± 0.14	0.71	10.69 ± 0.12	102.4