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Proceedings Paper

High resolution x-ray fluorescence microtomography on single sediment particles
Author(s): Laszlo Vincze; B. Vekemans; I. Szaloki; Koen Janssens; Rene Van Grieken; H. Feng; Keith W. Jones; Freddy Adams
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Paper Abstract

This work focuses on the investigation of the distribution of contaminants in individual sediment particles from the New York/New Jersey Harbor. Knowledge of the spatial distribution of the contaminants within the particles is needed to enable (1) more sophisticated approaches to the understanding of the fate and transport of the contaminants in the environment and (2) more refined methods for cleaning the sediments. The size of the investigated particles ranges from 30-80 microns. Due to the low concentration of the elements of interest and the microscopic size of the environmental particles in these measurements, the small size and high intensity of the analyzing X-ray beam was critical. The high photon flux at the ESRF Microfocus beam line (ID13) was used as the basis for fluorescence tomography to investigate whether the inorganic compounds are taken upon the surface organic coating or whether they are distributed through the volume of the grains being analyzed. The experiments were done using a 13 keV monochromatic beam of approximately 2 micrometers in size having an intensity of 1010 ph/s, allowing absolute detection limits on the 0.04-1 fg level for Ti, Cr, Mn, Fe, Ni, and Zn.

Paper Details

Date Published: 7 January 2002
PDF: 9 pages
Proc. SPIE 4503, Developments in X-Ray Tomography III, (7 January 2002); doi: 10.1117/12.452865
Show Author Affiliations
Laszlo Vincze, Univ. Antwerp (Belgium)
B. Vekemans, Univ. Antwerp (Belgium)
I. Szaloki, Univ. Debrecen (Hungary)
Koen Janssens, Univ. Antwerp (Belgium)
Rene Van Grieken, Univ. Antwerp (Belgium)
H. Feng, Brookhaven National Lab. (United States)
Keith W. Jones, Brookhaven National Lab. (United States)
Freddy Adams, Univ. Antwerp (Belgium)

Published in SPIE Proceedings Vol. 4503:
Developments in X-Ray Tomography III
Ulrich Bonse, Editor(s)

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