The effect of sorption on phenanthrene bioavailability

摘要: Abstract Critical parameters that need to be considered in a bioavailability study are reviewed and applied on the sorption (binding) of phenanthrene dissolved humic acid (HA). Sorption coefficients values ( K ∞ ) HA were measured for from several sources. These used calculate amount was needed bind different fractions solution-phase phenanthrene. linearity complete reversibility assumed. A mixed culture degraders, dominated by Pseudomonas sp. sensitive changes concentrations range this study. Therefore, it expected if bound not available, as is commonly stated literature, would affect mineralization rate reducing concentration free However, found affected even when 90% phase. It concluded organisms able use directly phase at same