NON-DESTRUCTIVE ANALYSIS OF DENSE NON-AQUEOUS PHASE LIQUIDS (DNAPL) IN GEO-MATERIALS USING MAGNETIC RESONANCE IMAGING

Magnetic resonance imaging (MRI) is a diagnostic procedure that uses a large high strength magnet, radio frequency signals, and a computer to produce images. By using the principles of nuclear magnetic resonance familiar to many chemists, researchers can determine the nuclide concentrations of many isotopes. MRI scanning can image both the soil matrix and pore fluid. The distribution of different fluids such as NAPLs and the interaction of these fluids with soil can be determined. The amount and distribution of contaminants and their interaction with soils are critical to effectively characterizing a site for remediation. Because MRI allows the user to determine the density and atomic number of each individual pixel with in the image, these techniques can provide a powerful modality to give an accurate characterization of the movement of contaminants. In this study, MRI was used to image fluid (NAPLs) diffusion into porous media. Initial tests were conducted to examine a mixture of coal tar emulsion trapped in sand. A good correlation was illustrated between the MRI Index and the organic content of the mixture.

• Availability:
  • Find a library where document is available. Order URL: http://worldcat.org/isbn/189074302X
• Corporate Authors:

  University of Arizona, Tucson

  Drachman Institute, 819 E First Street
  Tucson, AZ  United States  85721

  University of Arizona, Tucson

  Department of Civil Engineering and Engineering Mechanics
  1209 E 2nd Street
  Tucson, AZ  United States  85721-0072

  University of Arizona, Tucson

  Transportation and Traffic Institute
  Tucson, AZ  United States  85721
• Authors:
  • Moo-Young, H
• Conference:
  • Second International Conference on Composites in Infrastructure
  • Location: Tucson, Arizona
  • Date: 1998-1-5 to 1998-1-7
• Publication Date: 1998-1

Language

• English

Media Info

• Features: Figures; References;
• Pagination: p. 541-553
• Serial:
  • Volume: 2

Subject/Index Terms

• TRT Terms: Coal tars; Contaminants; Emulsions; Liquids; Nondestructive tests; Nuclear magnetic resonance; Pores; Sand; Soil pollution; Solvents
• Uncontrolled Terms: Dense non-aqueous phase liquids
• Subject Areas: Design; Environment; Highways; Planning and Forecasting; I21: Planning of Transport Infrastructure;

Filing Info

• Accession Number: 00764841
• Record Type: Publication
• ISBN: 189074302X
• Files: TRIS
• Created Date: Jun 7 1999 12:00AM