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| 02783cam 2200421zi 4500 |
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| 001 | 9.873061 |
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| 003 | CaOODSP |
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| 005 | 20221107163817 |
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| 006 | m o d f |
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| 007 | cr ||||||||||| |
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| 008 | 190516e198811##oncad #ob f000 0 eng d |
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| 040 | |aCaOODSP|beng|erda|cCaOODSP |
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| 041 | |aeng|bfre |
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| 043 | |an-cn--- |
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| 086 | 1 |aEn13-5/88-102E-PDF |
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| 100 | 1 |aOnuska, Francis I., |d1935- |eauthor. |
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| 245 | 10|aSupercritical fluid extraction of 2,3,7,8 tetrachloro dibenzo-p-dioxin from sediment samples / |cby F. I. Onuska & K.A. Terry. |
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| 264 | 1|aBurlington, Ontario, Canada : |bNational Water Research Institute, Research and Applications Branch, Canada Centre for Inland Waters, |cNovember 1988. |
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| 300 | |a1 online resource (ii, 8 pages, 7 unnumbered pages) : |billustrations, graphs. |
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| 336 | |atext|btxt|2rdacontent |
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| 337 | |acomputer|bc|2rdamedia |
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| 338 | |aonline resource|bcr|2rdacarrier |
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| 490 | 1 |aNWRI contribution ; |v88-102 |
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| 500 | |aTitle from cover. |
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| 500 | |aDigitized edition from print [produced by Environment and Climate Change Canada]. |
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| 504 | |aIncludes bibliographical references. |
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| 520 | 3 |a"Supercritical fluid extraction (SFE) of 2,3,7,8 tetrachloro dibenzo-dioxin (2,3,7,8-TCDD) from contaminated sediments is a promising technique for its removal from environmental matrices. The ability of SFE to solubilize many organic contaminants is well documented in industrial processes but its analytical applications were exploited just recently. In this study, supercritical carbon dioxide and nitrous oxide and their mixtures with 2% methanol were used to extract 2,3,7,8-TCDD from aquatic sediments. An attractive feature of this process is that the carbon dioxide, being a virtually inert fluid, leaves no solvent residue on the processed sediment. Almost 100% of the 2,3,7,8-TCDD can be extracted from a sediment spiked with 200 ug/kg 2,3,7,8-TCDD in 30 minutes by using supercriticial carbon dioxide plus 2% methanol. Cleanup procedure is compared with the Soxhlet extraction procedure currently used as a standard method for extracting dioxins from sediment samples"--Abstract, page ii. |
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| 546 | |aIncludes abstract and management perspective in English and French. |
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| 692 | 07|2gccst|aSediments |
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| 692 | 07|2gccst|aExtraction |
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| 692 | 07|2gccst|aMethodology |
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| 700 | 1 |aTerry, K. A., |eauthor. |
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| 710 | 1 |aCanada. |bEnvironment Canada. |
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| 710 | 2 |aNational Water Research Institute (Canada). |bResearch and Applications Branch. |
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| 710 | 2 |aCanada Centre for Inland Waters. |
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| 830 | #0|aNWRI contribution ;|v88-102.|w(CaOODSP)9.844121 |
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| 856 | 40|qPDF|s1.12 MB|uhttps://publications.gc.ca/collections/collection_2019/eccc/en13-5/En13-5-88-102-eng.pdf |
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