School of Geoscience and Surveying Engineering, China University of Mining & Technology, Beijing 100083, China.
Spectrochim Acta A Mol Biomol Spectrosc. 2012 Oct;96:784-9. doi: 10.1016/j.saa.2012.07.025. Epub 2012 Jul 17.
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.
红外光谱法已被用于表征和比较来自中国的四种坡缕石矿物样品。红外光谱鉴定的主要谱带位置相似，但强度存在一些差异，且具有显著性。此外，在坡缕石及其杂质的光谱中还观察到了几个附加谱带。这种可变性归因于地质环境的差异，例如在形成或沉积过程中矿物的风化程度和运输程度，以及这些坡缕石中的杂质含量。对这些坡缕石样品的水和羟基基团谱带进行了研究。在 1195cm(-1)处观察到坡缕石的特征谱带。在 3480、3380、3266 和 3190cm(-1)处观察到的另外四个谱带归因于坡缕石结构中的水分子。这些结果表明，不同地区的坡缕石矿物的红外光谱不仅取决于坡缕石的主要物理化学性质，还取决于杂质的数量和种类。
