Supercritical Fluid Extraction (SFE) for the Removal of Lipid ... - Isco

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Syringe Pump Application Note AN30The aforementioned study indicates that using a mixtureof supercritical carbon dioxide and methanol iseffective in the removal of selected organic matter fromvarious archaeological artifacts, thereby suggesting thatsupercritical carbon dioxide, modified with an alcoholicsolvent such as methanol, is a viable non-destructivepretreatment prior to plasma oxidation and radiocarbondating for an accurate estimation of the age of the artifacts.Excellent agreement has been recorded betweenthe current pretreatment method (boxes) and those pretreatedusing strong acid or base (circles) applied tovarious archeological artifacts as shown in Figure 3.Figure 3: Radiocarbon dates by pre-treatment with strong acid or base (circles) vs. supercritical pretreatment(boxes)
Syringe Pump Application Note AN30References1. Steelman, K. L. and Rowe, M. W. 2001. Chapter 2 in ArchaeologicalChemistry – Materials, Methods, and Meaning,K.A. Jakes (ed.), American Chemical Society, Washington,DC.2. Steelman, K. L. 2004, Ph.D. Thesis, Department of Chemistry,Texas A&M University.3. Proefke, M. L., Reinhart, K. L., Raheel, M., Ambrose, S. H.and Wisseman, S. U. 1992. Probing the Mysteries ofAncient Egypt. Chemical Analysis of Roman Period EgyptianMummy. Anal. Chem., 664, 105-111A.4. King, J. W., France, J. E. and Snyder, J. M. 1992. On-lineSupercritical Fluid Extraction-Supercritical Fluid Reaction-CapillaryGas Chromatography Analysis of the FattyAcid Composition of Oilseeds. Fresenius J. Anal. Chem.,344, 474-478.5. Jackson, M. A. and King, J. W. 1996. Methanolysis of SeedOils in Flowing Supercritical Carbon Dioxide. J. Am. Oil.Chem. Soc., 73, 353-356.6. McDaniel, L. H., Asharf-Khorassani, M. and Taylor, L. T.2001. Supercritical Fluid Extraction of Wood Pulp withAnalysis by Capillary Gas Chromatography-Mass Spectrometry.J. Supercrit. Fluids, 19, 275-286.7. Wyatt, V. T. and Haas, M. J. 2009. Production of Fatty AcidMethyl Esters via the In Situ Transesterification of SoybeanOil in Carbon Dioxide-Expanded Methanol. J. Am. Oil Chem.Soc., 86, 1009-1016.8. West, K. N., Wheeler, C., McCarney, J. P., Griffith, K. N.,Bush, D., Liotta, C. L. and Eckert, C. A. 2001. In Situ Formationof Alkylcarbonic Acids with CO2. J. Phys. Chem. A, 105,3947-3948.9. Nicholson, P. T. and Shaw, I. (eds.), 2000. Ancient EgyptianMaterials and Technology, Cambridge University Press,Cambridge, England.10. Colombini, M. R. and Modugno, F. 2009 Organic MassSpectrometry in Art and Archaeology, John Wiley, N.Y.Last modified September 26, 2012Teledyne IscoP.O. Box 82531, Lincoln, Nebraska, 68501 USAToll-free: (800) 228-4373 • Phone: (402) 464-0231 • Fax: (402) 465-3091E-mail: IscoInfo@teledyne.comTeledyne Isco is continually improving its products and reserves the right to change productspecifications, replacement parts, schematics, and instructions without notice.
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