Adsorption of polycyclic aromatic hydrocarbons on soils

Abstract

Abstract: The adsorption of several polycyclic aromatic hydrocarbons (PAHs) on soils is studied in this paper.Through a continuous applying-sampling apparatus, the adsorption of fluoranthene and phenanthrene on soils from both China and abroad is measured without the interference of any other organic solvents.The results show that adsorption of fluoranthene and phenenthrene on soil correlated significantly with organic carbon contents of soils used as adsorbents.Investigations on the relations between LogKoc and molecular structure, LogKoc and physico-chemical characteristics of chemicals, such as octanol-water partition coefficients (Kow) and aquatic solubility (Sw) show that LogKoc is linearly correlated with LogSw, LogKow and the number of benzene loops in the molecular structure of PAHs.

Key words: Fluoranthene, Phenanthrene, Adsorption, Adsorption isotherm, Polycyclic aromatic hydrocarbons, melatonin, alleviating effect, autotoxicity, p-hydroxybenzoic acid, cucumber

He Yaowu, Ou Ziqing, Sun Tieheng, Ayfer Yediler. Adsorption of polycyclic aromatic hydrocarbons on soils[J]. Chinese Journal of Applied Ecology, 1995, 6(4): 423-427.

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