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EFFICIENCY OF DIOXIN RECOVERY FROM FLY ASH SAMPLES DURING EXTRACTION AND CLEANUP PROCESS
Citation:
Finkel, J., R. James, K. Baughman, J. Pau, J. Knoll, AND M. Midgett. EFFICIENCY OF DIOXIN RECOVERY FROM FLY ASH SAMPLES DURING EXTRACTION AND CLEANUP PROCESS. U.S. Environmental Protection Agency, Washington, D.C., EPA/600/D-89/050.
Description:
The data from preliminary investigations of the efficiency of dioxin recovery from fly ash samples during sample extraction and subsequent column cleanup of sample extracts are discussed. teps of the extraction and the column cleanup procedures were evaluated by using radiolabeled C-dioxins as tracers. ample extracts and eluate fractions were analyzed by liquid scintillation counting (LSC) and the results confirmed by gas chromatography/mass spectrometry (GC/MS). ecovery data of spiked 2,3,7,8- tetrachlorodibenzo-p-dioxin-14C (TCDD-14C) and octachlorodibenzo-p-dioxin-14C (TCDD-14C) In carbon-free fly ash and fly ash containing from 0.1 to 10% carbon are discussed. he data indicate that the amount of carbon in the fly ash may affect the recovery of dioxins. he data from this study will be used to determine procedural areas that need improvements or modifications to allow the accurate determination of trace levels of dioxins and furans in fly ash. arious extraction techniques of fly ash and cleanup of sample extracts by column chromatography were evaluated. everal chromatographic media and eluting solvents were investigated. nformation from this study will support efforts to monitor the hazardous composition, if any, of fly ash from various types of incinerators that use different types of combustible materials.