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Hyperpolarized Xenon Nuclear Magnetic Resonance (NMR) of Building Stone Materials
Department of Materials Science, University of Milano-Bicocca, Via R. Cozzi 53, 20125 Milano, Italy
* Author to whom correspondence should be addressed.
Received: 12 July 2012; in revised form: 27 August 2012 / Accepted: 14 September 2012 / Published: 24 September 2012
Abstract: We have investigated several building stone materials, including minerals and rocks, using continuous flow hyperpolarized xenon (CF-HP) NMR spectroscopy to probe the surface composition and porosity. Chemical shift and line width values are consistent with petrographic information. Rare upfield shifts were measured and attributed to the presence of transition metal cations on the surface. The evolution of freshly cleaved rocks exposed to the atmosphere was also characterized. The CF-HP 129Xe NMR technique is non-destructive and it could complement currently used techniques, like porosimetry and microscopy, providing additional information on the chemical nature of the rock surface and its evolution.
Keywords: 129Xe NMR; hyperpolarization; continuous flow; adsorption; diffusion; petrography; rocks; weathering; porosity
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Mauri, M.; Simonutti, R. Hyperpolarized Xenon Nuclear Magnetic Resonance (NMR) of Building Stone Materials. Materials 2012, 5, 1722-1739.
Mauri M, Simonutti R. Hyperpolarized Xenon Nuclear Magnetic Resonance (NMR) of Building Stone Materials. Materials. 2012; 5(9):1722-1739.
Mauri, Michele; Simonutti, Roberto. 2012. "Hyperpolarized Xenon Nuclear Magnetic Resonance (NMR) of Building Stone Materials." Materials 5, no. 9: 1722-1739.