Compounds Liquid solution characteristics
A B C D E* P*
Phenol (mgt) 300 300 300 300 300 +
Sodium azide (c...i. wt'wt) 0_02 0_02 0.02 0.02 0.02 0.02
NaHCO: (g L) - 0.5 0..6 0.6 0.6 0.6
NILCI (gt)       0.016 0.016 0.016
IC2HPO4 t3H20 (gI) - - - 0.003 0.003 0.003
FeC13* 6H20 (gl.) - -   0.0035 0.0035 0.0035
.MgS0-1*7H20 (gt)       0.005 0.005 0 005
CaC12*2H20 (g L) - - - 0.0032 0.0032 0.0032
* = this means that pH was confided with HCFNaOH 0 1 N around 7 ± 0.5 + = this means that different phenol concentrations were used and are described in each experimental condition.
Where A = natural soil + phenol + sodium azide, B = natural soil + phenol + sodium azide + bicarbonate salt to control pH, C = natural soil + phenol + sodium azide + bicarbonate
salt to control pH, D = natural soil + phenol + sodium azide - bicarbonate salt to control pH + nutritive salts, E = natural soil + phenol + sodium azide + bicarbonate + nutritive
salts + pH control with HCl/NaOH, F = natural soil + different phenol concentrations + sodium azide + nutrient salts + pH control with HCL/NaOH
Table 1: Salt liquid solutions used in different tests in this work.