You are here:
EVALUATION OF METHODOLOGY FOR DETERMINATION OF POLYHALOGENATED DIBENZO-P-DIOXINS AND DIBENZOFURANS IN AMBIENT AIR
Citation:
Harris, R., R. Lewis, D. McDaniel, J. Gibson, AND A. Dupuy. EVALUATION OF METHODOLOGY FOR DETERMINATION OF POLYHALOGENATED DIBENZO-P-DIOXINS AND DIBENZOFURANS IN AMBIENT AIR. U.S. Environmental Protection Agency, Washington, D.C., EPA/600/D-91/106 (NTIS PB91196063).
Description:
General Metals works PS-1 PUF air samplers and an analytical method based on high resolution gas chromatography - high resolution mass spectrometry (HRGC-HRMS) were evaluated for determination of polychlorinated dibenzo-p-dioxins and dibenzofurans (PCDDs/PCDFs) and polybrominated dibenzo-p-dioxins and dibenzofurans (PCDDs/PCDFs) in ambient air. ilute solutions of these compounds and 13 C 12-1234-TCDD were used to spike the filters f PS-1 air samplers which were then operated 24 hours to sample 350-400 m3 ambient air. fter sampling, each quartz-fiber filter and polyurethane foam (PUT) were spiked with 13 C 12-labeled PCDD, PCDF, PBDD, and PBDF internal standards before separate Soxhlet extract ions with benzene. he extracts were subjected to lean-up procedures using microcolumns of silica gel, alumina and carbon and then analyzed by HRGC-HRMS. esults derived from this study satisfied QA/QC requirements for analytical data and demonstrate-that the methodology could accurately determine pg/m3 and sub-pg/m3 levels of these compounds in ambient air. ackground levels detected in ambient air are also discussed.