Effects of Metallic Cations on Desorption of Phenanthrene and Fluoranthene from Long-Term Contaminated Soil Particles

This study investigate the role of metallic cations on desorption level of phenanthrene and fluoranthene from longterm contaminated soil particles. Based on Pearson principle and calculation results of Gauss03 software, phenanthrene is soft base and fluoranthene is borderline base. Phenanthrene and fluoranthene desorption could be improved by Ba2+, Al3+, Ca2+ acidic cations, but the tendency decreases with the metallic cations hardness. Hg2+, Ag+ played an inhibition role on the target pollutions desorption. Compared with the other two metallic cation types, borderline acidic metallic cations can be considered as the first choice to promote the targets desorption from the long-term contaminated soil particles.