Please use this identifier to cite or link to this item: http://hdl.handle.net/2122/6503
AuthorsDella Ventura, G.* 
Bellatreccia, F.* 
Marcelli, A.* 
Cestelli Guidi, M.* 
Piccinnini, M.* 
Cavallo, A.* 
Piochi, M.* 
TitleApplication of micro-FTIR imaging in the Earth sciences
Issue Date2010
Series/Report no.6/397 (2010)
DOI10.1007/s00216-010-3811-8
URIhttp://hdl.handle.net/2122/6503
KeywordsFTIR spectroscopy
Imaging
Hydrogen
Carbon
Geological materials
Subject Classification04. Solid Earth::04.04. Geology::04.04.07. Rock geochemistry 
AbstractIn this paper we describe recent applications of micro-infrared imaging in the Earth sciences. We address, in particular, the use of Fourier-transform infrared (FTIR) spectroscopy in characterizing the zoning and speciation of H and C in a variety of geological materials, including microporous minerals, nominally anhydrous volcanic minerals (NAMs), and crystal inclusions. These investigations show that use of the modern techniques of FTIR imaging enables detection of the zoning of volatile species across the studied samples, and possible configuration changes of structurally-bound carbon molecular species (e.g., CO2 vs CO3) during crystal growth. Such features, which are not accessible with other micro-analytical techniques, may provide information about the physicochemical properties which act as constraints in the genesis of the samples, and important information about the evolution of the geological system. Tests performed with focal-plane-array detectors (FPA) show that resolution close to the diffraction limit can be achieved if the amounts of the target molecules in the sample are substantially different. We also point out the possibility of using FTIR imaging for investigations under non-ambient conditions.
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