Investigation of Dioxins and Mercury in the Atmosphere Particulates and Rainwater Runoff from CPDC An-Shun Site and Surrounding Environment

摘要

This study investigated the dispersion of dioxins and mercury from the CPDC An-Shun Plant site that is contaminated with high concentration of mercury, dioxins and pentachlorophenol. The results showed that the averaged dioxin concentrations in the atmospheric particulates, water in the seawater storage pond (old wastewater discharge pond) and neighboring Chu-Fa-Gang Creek, and the runoff from the site were 0.020～0.072 pg-I-TEQ/Nm3/d, 14.1～68.7 pg I-TEQ/L, 1.86～15.0 pg I-TEQ/L and 3.54～3052 pg-I-TEQ/L, respectively. As for mercury, except for the runoff from a hot spot which reached a level of 0.0385 mg/L, the concentrations of total mercury for the analyzed samples were all below 0.002mg/L. Overall findings revealed that the seawater storage pond may play an important role in reducing the dispersion of the pollutants of CPDC An-Shun Plant site to the surrounding environment.