Environmental management technology demonstration and commercialization. Semi-annual progress report, April 1, 1995--October 31, 1995

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Several field-portable (e.g., gas chromatrography (GC), gas chromatography-mass spectrometry (GC-MS)) instruments are available for the measurement of organic pollutants. However, solid samples such as soils, sludges, and sediments must first be extracted before analysis can be performed. Conventional extraction methods based on liquid solvent (e.g., Soxhlet extraction) are not practical in the field because of the large volumes fo solvents required as well as clumsy apparatus and glassware. However, supercritical fluid extraction (SFE) has been demonstrated in several studies by the Energy & Environmental Research Center (EERS) to extract a broad range of organic pollutants from soils and sediments successfully. ... continued below

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265 p.

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Creator: Unknown. November 1, 1995.

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Description

Several field-portable (e.g., gas chromatrography (GC), gas chromatography-mass spectrometry (GC-MS)) instruments are available for the measurement of organic pollutants. However, solid samples such as soils, sludges, and sediments must first be extracted before analysis can be performed. Conventional extraction methods based on liquid solvent (e.g., Soxhlet extraction) are not practical in the field because of the large volumes fo solvents required as well as clumsy apparatus and glassware. However, supercritical fluid extraction (SFE) has been demonstrated in several studies by the Energy & Environmental Research Center (EERS) to extract a broad range of organic pollutants from soils and sediments successfully. Of the approximately 100 major organic pollutants identified as problems for the US Department of Energy (DOE) sites, our SFE laboratory has demonstrated efficient SFE recoveries for about half, and published literature has addressed an additional 40%. SFE in the off-line mode (i.e., collection of extracted organics in a small voluem of liquid solvent) has also been demonstrated to be easily performed in the field with only generator electrical power for support. Recent advances in flow restrictor design have virtually eliminated the mechanical problems previously associated with the performance of SFE in the field.

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265 p.

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INIS; OSTI as DE96011311

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  • Other Information: PBD: Nov 1995

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  • Other: DE96011311
  • Report No.: DOE/MC/31388--5252
  • Grant Number: FC21-94MC31388
  • DOI: 10.2172/366474 | External Link
  • Office of Scientific & Technical Information Report Number: 366474
  • Archival Resource Key: ark:/67531/metadc677150

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  • November 1, 1995

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  • July 25, 2015, 2:20 a.m.

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Environmental management technology demonstration and commercialization. Semi-annual progress report, April 1, 1995--October 31, 1995, report, November 1, 1995; Grand Forks, North Dakota. (digital.library.unt.edu/ark:/67531/metadc677150/: accessed September 23, 2017), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.