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Proceedings Paper

Characterization of oil nano-structures with monochromatic x-ray micro-tomography
Author(s): Victor E. Asadchikov; Alexey V. Buzmakov; Anna S. Osadchaya; Denis A. Zolotov; Michael K. Rafailov
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Paper Abstract

Here we report work done toward detection and characterization of micro-and nano-structures in bitumen, including mineral particles-clay and sand as well as metal-organic micro-and nano-structures containing porphyrines. X-ray micro-tomograph with monochromatic radiation has been used for detection of the structures. In order to detect and characterize nano-and micro-structures tomograph’s operational wavelength has been tuned to absorption wavelength of “chemical element of interest” X-ray spectrum: whatever it is Si or porphyrine-forming metals like V, Ni, Co. Contrast between X-ray absorption of micro-structures containing specific element and average bitumen’s environment absorption provides a tool for measurement of element mass concentration as well as size and mass density distributions of micro-and nano structures not only on surface but in bitumen volume. Specifically the most interest is in measurement of vanadyl porphyrines and other metal containing chemicals in asphaltene micro-structures changing per asphalten concentration due to bitumen processing.

Paper Details

Date Published: 10 October 2012
PDF: 9 pages
Proc. SPIE 8460, Biosensing and Nanomedicine V, 84600V (10 October 2012); doi: 10.1117/12.2000153
Show Author Affiliations
Victor E. Asadchikov, A.V. Shubnikov Institute of Crystallography (Russian Federation)
Alexey V. Buzmakov, A.V. Shubnikov Institute of Crystallography (Russian Federation)
Anna S. Osadchaya, A.V. Shubnikov Institute of Crystallography (Russian Federation)
Denis A. Zolotov, A.V. Shubnikov Institute of Crystallography (Russian Federation)
Michael K. Rafailov, Univ. of Alberta (Canada)

Published in SPIE Proceedings Vol. 8460:
Biosensing and Nanomedicine V
Hooman Mohseni; Massoud H. Agahi; Manijeh Razeghi, Editor(s)

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