The different components of this pharmaceutical sample can be characterized easily by Raman spectroscopy and the comparison with spectra from our libraries allowed us to identify some of these molecules. A good spectral discrimination could be obtained as the characteristic spectral fingerprints have exclusive features. The Raman imaging technique is a very powerful tool as shown here, as it also enables to characterize the spatial distribution of the components with a high spatial resolution. The complementary results obtained by FTIR spectroscopy on the sample confirm the presence of lactose and allows the identification of the third component also observed by Raman spectroscopy. The combination of FTIR and Raman analysis on the same spectrometer represents a powerful analytical tool to readily record both IR and Raman vibrational information from a same sample position.
Simultaneous in situ Raman and FTIR spectroscopic characterisations of catalytic systems under reaction conditions have been successfully performed with the LabRAM IR using a dedicated cell. Different adsorbed NOx species (nitrito, nitrato, nitro and nitrate compounds) on the surface of the alumina supported palladium during NO exposure at 473 K have been identified by these spectroscopic measurements.These measurements highlight the complementarity of the two techniques for investigating catalytic reactions. Indeed, Raman spectroscopy gives access to information located at low wavenumbers, enabling the characterization of the active phase during the reaction, while the high sensitivity of IR spectroscopy allows probing adsorbed species at low concentration.
K 金、镀金、镀银等首饰饰品称为仿真饰品。2009 年我国首个《仿真饰品中有害物质的限量要求及检测方法》标准草案通过审定并实施。 天瑞仪器针对《仿真饰品中有害物质的限量要求及检测方法》及美国、欧盟等国家和地区的限定,投入了大量的精力,为各生产厂家量身定做简单可行的解决方案: X 荧光光谱仪检测,唯一能快速无损的对有害物质进行检测,并且只需要一台设备就能完全满足仿真饰品检测要求。