Mineralisation of 14C–phenanthrene

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Presentation transcript:

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 108.02 ± 3.03 0.69 ± 0.11 47.92 ± 1.67 Ferulic acid 112.70 ± 4.77 0.96 ± 0.09 52.93 ± 0.45 p-coumaric acid 116.99 ± 1.71 0.78 ± 0.09 47.70 ± 2.21 1:1:1 mixture of the 3 hydroxycinnamic acids 123.54 ± 0.65 0.51 ± 0.04 37.47 ± 2.19 100 µg kg-1 126.82 ± 3.20 0.58 ± 0.15 45.62 ± 2.36 124.81 ± 4.03 0.58 ± 0.27 42.76 ± 1.91 141.80 ± 4.37 0.63 ± 0.16 44.94 ± 1.75 125.41 ± 1.57 0.77 ± 0.05 46.05 ± 1.25 200 µg kg-1 138.06 ± 5.16 0.70 ± 0.21 43.70 ± 2.81 133.50 ± 6.40 0.74 ± 0.05 46.77 ± 1.00 p-Coumaric acid 134.83 ± 5.15 0.55 ± 0.02 44.94 ± 2.67 123.43 ± 1.44 0.55 ± 0.05 38.50 ± 2.15 Control Phenanthrene only 127.61 ± 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, 40-47. doi:10.12691/ijebb-3-2-1 © The Author(s) 2015. Published by Science and Education Publishing.