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Table 3 Mean CO2 production rates (µg h g−1) in the phenanthrene and 3-ring N-PAHs amended soils with glucose addition over time

From: Assessment of the effects of phenanthrene and its nitrogen heterocyclic analogues on microbial activity in soil

Chemical Time (d) Concentrations (mg kg−1)
0 10 100 250 500
Phenanthrene 0 12.50 ± 0.50 13.70 ± 0.50 10.50 ± 0.80 10.70 ± 0.10 10.20 ± 0.10
  30 20.20 ± 1.00 21.50 ± 1.70 19.20 ± 1.40 15.90 ± 0.70 13.20 ± 0.70
  60 18.60 ± 0.80 21.60 ± 1.10 16.30 ± 0.60 14.30 ± 0.60 11.70 ± 0.30
  90 16.60 ± 0.30 18.30 ± 0.30 14.60 ± 0.50 12.80 ± 0.10 11.10 ± 0.60
1,7-Phenanathroline 0 12.40 ± 0.20 17.60 ± 0.40 16.20 ± 0.40 15.70 ± 0.40 14.90 ± 0.30
  30 2.70 ± 0.30 2.50 ± 0.20 2.60 ± 0.20 3.30 ± 0.40 15.20 ± 2.60
  60 39.10 ± 6.00 42.70 ± 6.00 46.00 ± 2.60 47.10 ± 4.60 12.60 ± 0.80
  90 41.40 ± 6.70 35.50 ± 2.80 38.20 ± 1.90 40.30 ± 3.80 11.40 ± 0.10
Benzo[h]quinoline 0 12.40 ± 0.20 12.60 ± 0.30 12.10 ± 0.10 11.20 ± 0.20 10.70 ± 0.10
  30 2.70 ± 0.30 2.50 ± 0.10 2.60 ± 0.10 2.50 ± 0.10 3.50 ± 0.20
  60 39.10 ± 6.0 60.70 ± 4.10 39.70 ± 0.30 38.20 ± 5.90 21.60 ± 1.50
  90 41.40 ± 6.70 49.80 ± 2.30 29.50 ± 1.30 30.50 ± 2.80 18.30 ± 1.30
4,7-Phenanthroline 0 12.50 ± 0.50 15.50 ± 0.40 14.70 ± 0.30 14.30 ± 0.20 13.50 ± 0.60
  30 10.80 ± 0.10 32.70 ± 0.10 28.60 ± 1.00 29.30 ± 0.50 34.20 ± 0.30
  60 8.30 ± 0.60 26.10 ± 0.50 21.60 ± 0.40 24.20 ± 0.40 28.50 ± 0.20
  90 8.10 ± 0.30 20.60 ± 0.40 17.90 ± 1.20 21.40 ± 0.30 21.30 ± 0.40
  1. Data shows different concentrations (mg kg−1) and incubation days, respectively