||Evaluation of a Sampling and Analysis Method for Determination of Polyhalogenated Dibenzo-p-Dioxins and Dibenzofurans in Ambient Air.
Harless, R. L. ;
Lewis, R. G. ;
McDaniel, D. D. ;
Gibson, J. F. ;
Dupuy, A. E. ;
||Environmental Protection Agency, Research Triangle Park, NC. Atmospheric Research and Exposure Assessment Lab. ;National Aeronautics and Space Administration, Bay Saint Louis, MS. John C. Stennis Space Center.
Air pollution sampling ;
Air samplers ;
Combustion production ;
Oxygen heterocyclic compounds ;
Chemical analysis ;
Waste recycling centers ;
Volatile organic compounds
||Most EPA libraries have a fiche copy filed under the call number shown. Check with individual libraries about paper copy.
||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), polybrominated dibenz-p-dioxins and dibenzofurans (PBDDs/PBDFs) and bromo/chloro dibenzo-p-dioxins and dibenzofurans (BCDDs/BCDFs) in ambient air. Dilute solutions of these compounds and (13)C-1,2,3,4-TCDD were used to spike the filters of PS-1 air samplers which were then operated 24 hrs to sample 350-400 cubic meter ambient air. After sampling, each quartz-fiber filter and polyurethane foam (PUF) were spiked with (13)C-12-labeled PCDD, PCDF, PBDD, and PBDF internal standards before separate Soxhlet extractions with benzene. The extracts were subjected to an acid/base clean-up procedure followed by clean-up on microcolumns of silica gel, alumina, and carbon and then analyzed by HRGC-HRMS. Results derived from the study indicated the PS-1 ambient air samplers and the analytical procedures were very efficient and that pg/cubic meter and sub-pg/cubic meter levels of total PCDDs/PCDFs, PBDDs/PBDFs, BCDDs/BCDFs, and 2,3,7,8-substituted congeners could be accurately measured.
||Pub. in CHEMOSPHERE, v25 n7-10 p1317-1322 Oct/Nov 92. Prepared in cooperation with National Aeronautics and Space Administration, Bay Saint Louis, MS. John C. Stennis Space Center.
||Reprint: Evaluation of a Sampling and Analysis Method for Determination of Polyhalogenated Dibenzo-p-Dioxins and Dibenzofurans in Ambient Air.
||PC A02/MF A01