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Table 4 Inhibition (%) by phenanthrene and the 3-ring N-PAHs on CO2 production in 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) Inhibition (%) by chemical concentration (mg kg−1)
10 100 250 500 R2
Phenanthrene 0 5.00 12.50 12.10 15.70 0.926
  30 3.90 3.20 20.70 29.50  
  60 12.60 11.40 22.50 31.70  
  90 8.40 8.80 17.10 26.60  
1,7-Phenantholine 0 37.60 31.00 29.30 27.70 0.932
  30 89.30 41.70 25.90 9.40  
  60 4.80 9.30 14.90 66.80  
  90 9.80 3.70 1.80 69.90  
Benzo[h]quinoline 0 0.40 2.60 6.00 8.70 0.942
  30 8.40 56.50 61.00 49.50  
  60 45.60 4.60 9.40 40.50  
  90 22.30 23.40 20.60 45.80  
4,7-Phenanthroline 0 1.40 4.00 5.60 8.50 0.989
  30 NI NI NI NI  
  60 NI NI NI NI  
  90 NI NI NI NI  
  1. Data shows different chemical concentrations (mg kg−1) and incubation days, respectively
  2. NI no inhibition, R 2 correlation coefficient