Application of attenuated total reflectance Fourier transform infrared spectroscopy in the mineralogical study of a landslide area, Hungary

作者：Udvardi Beatrix; Kovacs Istvan Janos^*; Konya Peter; Foldvari Maria; Furi Judit; Budai Ferenc; Falus Gyorgy; Fancsik Tamas; Szabo Csaba; Szalai Zoltan; Mihaly Judith

来源：Sedimentary Geology, 2014, 313: 1-14.

DOI：10.1016/j.sedgeo.2014.08.005

• ATR FTIR
• Sediments
• Landslide
• Grain size
• Anisotropy of calcite

This study demonstrates that the unpolarized attenuated total reflectance Fourier transform infrared spectroscopy (ATR FTIR) is a practical and quick tool to distinguish different types of sediments in landslide-affected areas, and potentially other types of physical environments too. Identification and quantification of minerals by ATR FTIR is implemented on a set of powdered natural sediments from a loess landslide (Kulcs, Hungary). A protocol including sample preparation, analytical conditions and evaluation of sediment ATR spectra is outlined in order to identify and estimate major minerals in sediments. The comparison of the defined FTIR parameters against qualitative and quantitative results of X-ray diffraction and thermal analysis was used to validate the use of ATR FTIR spectroscopy for the considered sediments. The infrared band areas and their ratios (water/carbonates; silicates/carbonates; kaolinite) appear to be the most sensitive parameters to identify strongly weathered sediments such as paleosols and red clays which most likely facilitate sliding and could form sliding zones. The effect of grain size and orientation of anisotropic minerals on the wave number and intensity of some major absorption bands is also discussed.

• 出版日期2014-11