Table 1. Concentrations of PAHs in soils.

PAHs	The concentrations of PAHs in soil (mg·kg−1 dry weight)
	A	Z	Q
NAP	34.3±3.80a	25.5±7.30a	25.7±4.19a
ANE	42.8±1.77a	39.9±0.48ab	36.7±0.64b
PHE	8.62±0.67a	6.45±0.58a	3.36±0.78b
ANT	72.1±4.71a	56.6±4.34a	16.1±7.92b
FLU	0.89±0.02a	0.72±0.06b	0.73±1.44b
ANY	2.09±0.05a	1.01±0.04b	1.04±0.06b
PYR	1.68±0.02a	0.94±0.01b	0.91±0.03b
FLA	3.19±0.18a	2.14±0.09ab	0.82±0.34b
CHR	6.62±0.41a	3.20±0.04b	1.22±0.49c
BaA	0.94±0.01a	0.51±0.17b	0.52±0.01b
BbF	1.77±2.87a	0.86±4.41b	0.69±1.97b
BghiP	3.50±0.03a	1.64±0.04b	1.66±0.12b
∑PAHs	178±4.87a	139±4.20b	89.5±5.79c

Note: different letters in the same row indicate significant differences (P<0.05).