1. Mineralisation of 14C–phenanthrene
Table 2. Mineralisation of 14C–phenanthrene in fresh artificially spiked soils amended with hydroxycinnamic acids at
concentrations of 50 µg kg -1, 100 µg kg -1, 200 µg kg -1 and unamended soil (control). Values are the mean (n=3) ± SEM
Conditions
Soil Treatment
Mineralisation of 14C–phenanthrene
Lag phase (h)
Maximum rate (% h-1)
Cumulative extent (%)
50 µg kg-1
Caffeic acid
± 3.03
0.69 ± 0.11
47.92 ± 1.67
Ferulic acid
± 4.77
0.96 ± 0.09
52.93 ± 0.45
p-coumaric acid
± 1.71
0.78 ± 0.09
47.70 ± 2.21
1:1:1 mixture of the 3 hydroxycinnamic acids
± 0.65
0.51 ± 0.04
37.47 ± 2.19
100 µg kg-1
± 3.20
0.58 ± 0.15
45.62 ± 2.36
± 4.03
0.58 ± 0.27
42.76 ± 1.91
± 4.37
0.63 ± 0.16
44.94 ± 1.75
± 1.57
0.77 ± 0.05
46.05 ± 1.25
200 µg kg-1
± 5.16
0.70 ± 0.21
43.70 ± 2.81
± 6.40
0.74 ± 0.05
46.77 ± 1.00
p-Coumaric acid
± 5.15
0.55 ± 0.02
44.94 ± 2.67
± 1.44
0.55 ± 0.05
38.50 ± 2.15
Control
Phenanthrene only
± 2.48
0.54 ± 0.06
37.20 ± 0.23
Aniefiok E. Ite et al. The Effect of Hydroxycinnamic Acids on the Microbial Mineralisation of Phenanthrene in Soil.
International Journal of Environmental Bioremediation & Biodegradation, 2015, Vol. 3, No. 2,
doi: /ijebb-3-2-1
© The Author(s) Published by Science and Education Publishing.