Abstract:

Chlorinated polycyclic aromatic hydrocarbons (Cl-PAHs) are chlorinated derivatives of PAHs, and some ClPAHs have been shown to elicit dioxin-like toxicity and mutagenic properties. Nevertheless, information of the physical/chemical properties and environmental fate of Cl-PAHs are limited. Quantitative structure-activity relationship (QSAR) and level Ⅲ fugacity model were used to estimate the physical/chemical properties and environmental fate of 20 Cl-PAH congeners in this study. The result shows that the toxicity of Cl-PAHs increases with the increasing of chlorination level. These new type of pollutants tends to accumulate in soil and sediment with dioxin-like fate in the environment.

Key words: quantitative structure-activity relationship(QSAR); fugacity model; chlorinated polycyclic aromatic hydrocarbons (Cl-PAHs); environmental fate