00000nam 2200000zi 4500 9.877029 CaOODSP 20241203113650 m o d f cr ||||||||||| 190726s1990 oncad ob f000 0 eng d CaOODSP eng rda CaOODSP eng fre n-cn--- En13-5/90-130E-PDF Luthe, Corinne Elizabeth, 1953- author. A proposed reference method for the determination of dibenzofuran and dibenzo-p-dioxin in defoamers / by C.E. Luthe, R.H. Voss, H.B. Lee, and T.E. Peart. Burlington, Ontario : National Water Research Institute, Research & Applications Branch ; Pointe Claire, P.Q. : Pulp and Paper Research Institute of Canada, [1990] 1 online resource (20 unnumbered pages) : illustrations, graphs. text txt rdacontent computer c rdamedia online resource cr rdacarrier NWRI contribution ; 90-130 Digitized edition from print [produced by Environment and Climate Change Canada]. Includes bibliographical references. "Based on a method developed by the Pulp and Paper Research Institute of Canada, a procedure optimized for the determination of dibenzofuran (DBF) and dibenzo-p-dioxin (DBD) in defoamers at low ng/g levels is presented. The defoamer is steam extracted and the extract in iso-octane is cleaned up on a basic alumina column. Final analysis is performed by GC-MS in the selected ion monitoring mode and the extraction recoveries of native DBD and DBF are monitored by using DBF-d8 and DBD-d8 as surrogates. Confirmation of DBD and DBF was done by comparing the ratio of peak areas for the quantitation and confirmation ions of each compound in the standard and the sample. Based on a 5 g sample and a final volume of 0.5 mL, the method detection limit is 1 ng/g for both DBF and DBD"--Abstract. Includes abstract and management perspective in English and French. Dibenzofurans gccst Pulp and paper industry gccst Environmental management Voss, R. H., author. Lee, H. B., author. Peart, Thomas E., author. Canada. Environment Canada. National Water Research Institute (Canada). Research and Applications Branch. Pulp and Paper Research Institute of Canada. NWRI contribution ; 90-130. (CaOODSP)9.844121 PDF 1.31 MB https://publications.gc.ca/collections/collection_2019/eccc/en13-5/En13-5-90-130-eng.pdf