Department of Analytical Chemistry, Physical Chemistry and Chemical Engineering and Police Sciences University Research Institute (IUICP), Universidad de Alcalá, Ctra. Madrid-Barcelona km 33.6, 28871 Alcalá de Henares, Madrid, Spain.
Department of Analytical Chemistry, Faculty of Sciences, University of Cadiz, Agrifood Campus of International Excellence (ceiA3), IVAGRO, P.O. Box 40, 11510 Puerto Real, Cadiz, Spain.
Spectrochim Acta A Mol Biomol Spectrosc. 2018 Nov 5;204:81-87. doi: 10.1016/j.saa.2018.06.002. Epub 2018 Jun 7.
The NIR spectra from 1000 to 2500 nm of 18 different explosives, propellant powders and energetic salts were collected and interpreted. NIR spectroscopy is known to provide information about the combination bands and overtones of highly anharmonic vibrations as those occurring in XH bonds (CH, NH and OH). Particularly intense and complex were the bands corresponding to the first combination region (2500-1900 nm) and first overtone stretching mode (2ν) of CH and NH bonds (1750-1450 nm). Inorganic oxidizing salts including sodium/potassium nitrate, sodium/potassium chlorate, and sodium/potassium perchlorate displayed low intense or no NIR bands.
采集并解释了 18 种不同爆炸物、推进剂粉末和含能盐在 1000 到 2500nm 近红外光谱的近红外光谱。已知近红外光谱可提供关于高度非谐振动组合带和泛音的信息，如 XH 键（CH、NH 和 OH）中的振动。对应于第一组合区域（2500-1900nm）和 CH 和 NH 键第一泛音伸缩模式（2ν）（1750-1450nm）的谱带特别强烈和复杂。包括硝酸钠/钾、氯酸钠/钾和高氯酸钠/钾在内的无机氧化盐显示出低强度或无近红外谱带。
