Phytomediated Biostimulation of the Autochthonous Bacterial Community for the Acceleration of the Depletion of Polycyclic Aromatic Hydrocarbons in Contaminated Sediments

Table 1

PAH concentration in sediment at the beginning of the experiment (BE) and after 12 months of incubation of N spiked sediments (Ns), 12 months of incubation of N spiked and vegetated sediments (NsV), and 12 months of incubation of not biostimulated sediment—control (notB). The mean values of the percentage of depletion (%) ±SD with respect to BE are reported on the base of the number of condensed rings and for the total PAHs ().

PAH	Abbr	BE; (mg/Kg DW)	NsV; (mg/Kg DW)	%	Ns; (mg/Kg DW)	%	notB; (mg/Kg DW)	%
2 condensed rings				79.97		45.49		ns
Naphthalene	NA
3 condensed rings				68.14		34.44
Acenaphthylene	ACE
Acenaphthene	AC
Fluorene	FL
Phenanthrene	PH
Anthracene	AN
4 condensed rings				50.73		33.67		ns
Fluoranthene	FLU
Pyrene	PY
Benzo[a]anthracene	BaA
Chrysene	CH
5 condensed rings				36.65		23.57		ns
Benzo[b]fluoranthene	BbF
Benzo[k]fluoranthene	BkF
Benzo[a]pyrene	BaP
Dibenz[a,h]anthracene	DA
6 condensed rings				29.86		ns		ns
Indeno[1,2,3-cd]pyrene	PI			29.94		ns
Benzo[g,h,i]perylene	BP			29.79		ns
				58.47		31.79		ns

ns: not significant ().