alexa An infrared spectroscopic comparison of four Chinese palygorskites.
Environmental Sciences

Environmental Sciences

Journal of Petroleum & Environmental Biotechnology

Author(s): Liu Q, Yao X, Cheng H, Frost RL

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Abstract Infrared spectroscopy has been used to characterize and compare four palygorskite mineral samples from China. The position of the main bands identified by infrared spectra is similar, but there are some differences in intensity, which are significant. In addition, several additional bands are observed in the spectra of palygorskite and their impurities. This variability is attributed to differences in the geological environment, such as the degree of weathering and the extent of transportation of the minerals during formation or deposition, and the impurity content in these palygorskites. The bands of water and hydroxyl groups in these spectra of palygorskite samples have been studied. The characteristic band of palygorskite is observed at 1195 cm(-1). Another four bands observed at 3480, 3380, 3266 and 3190 cm(-1) are attributed to the water molecules in the palygorskite structure. These results suggest that the infrared spectra of palygorskites mineral from different regions are decided not only by the main physicochemical properties of palygorskite, but also by the amount and kind of impurities. Copyright © 2012 Elsevier B.V. All rights reserved. This article was published in Spectrochim Acta A Mol Biomol Spectrosc and referenced in Journal of Petroleum & Environmental Biotechnology

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