SOLID PHASE MICROEXTRACTION SAMPLING OF HIGH EXPLOSIVE RESIDUES IN THE PRESENCE OF RADIONUCLIDES AND RADIONUCLIDE SURROGATE METALS Page: 2 of 34
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Solid Phase Microextraction Sampling of High Explosive Residues in the Presence of
Radionuclides and Radionuclide Surrogate Metals
M. C. Duffl*, S. L. Crumps, R. J. Rays, W. E. Cotham2, S. LaMont3, D. Beals, K. Mount4, R. D.
Koons4, J. Leggitt4
1 Savannah River National Laboratory (SRNL), Aiken, SC 29808.
2 Los Alamos National Laboratory (LANL), Los Alamos, NM 87545
3 Federal Bureau of Investigation (FBI) Laboratory Division, Quantico, VA 22135.
4 University of South Carolina, Dept. of Chemistry and Biochemistry, Columbia, SC 29208
* Corresponding author: martine.duff(ahsrnl.doe.gov.
The Federal Bureau of Investigation (FBI) Laboratory currently does not have on site facilities
for handling radioactive evidentiary materials and there are no established FBI methods or
procedures for decontaminating high explosive (HE) evidence while maintaining evidentiary
value. One experimental method for the isolation of HE residue involves using solid phase
microextraction or SPME fibers to remove residue of interest. Due to their high affinity for
organics, SPME fibers should have little affinity for most metals. However, no studies have
measured the affinity of radionuclides for SPME fibers. The focus of this research was to
examine the affinity of dissolved radionuclide (239/24oPu, 23sU, 23Np, Sr, 33Ba, 37Cs, 60Co and
226Ra) and stable radionuclide surrogate metals (Sr, Co, Ir, Re, Ni, Ba, Cs, Nb, Zr, Ru, and Nd)
for SPME fibers at the exposure conditions that favor the uptake of HE residues. Our results
from radiochemical and mass spectrometric analyses indicate these metals have little measurable
affinity for these SPME fibers during conditions that are conducive to HE residue uptake with
subsequent analysis by liquid or gas phase chromatography with mass spectrometric detection.
Disclaimer: This was a feasibility study for demonstration of method and not a final product. The
methods used for the analyses of the HE are not those used by the FBI, and it should not be implied that
the data shown for GC/MS or LC/MS are acceptable for court admission as presented.
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Duff, M; S Crump, S; Robert02 Ray, R & Donna Beals, D. SOLID PHASE MICROEXTRACTION SAMPLING OF HIGH EXPLOSIVE RESIDUES IN THE PRESENCE OF RADIONUCLIDES AND RADIONUCLIDE SURROGATE METALS, article, April 13, 2007; [Aiken, South Carolina]. (digital.library.unt.edu/ark:/67531/metadc889308/m1/2/: accessed November 15, 2018), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.