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Abstract
This study focuses on the speciation and determination of As, Se, Sb, and Cr in incinerator fly ash, which was sequentially extracted to three kinds of chemical fractions: Citation[1] Exchangeable Citation[2], Carbonates, and Citation[3] Fe/Mn oxides. Using suppressed IC, we could determine the optimum separation condition for the target components. Also, the retention behavior of the metal species was investigated and explained by ion exchange equilibrium. Also, based on the optimum separation condition, the effect of the concentration and pH of the extractants on the leachability of chemical species from incinerator fly ash was investigated using IC and ICP-MS. On the whole, as the concentration and pH of the extractants increased, the leached "concentration of each chemical species increased.
ACKNOWLEDGMENTS
This work was supported by EMITEK and The Korea Basic Science Institute.