选择单波数法,Wavenumber中输入定量 波数,或点击键用鼠标在谱图中选择。如图: 4、 设置校正曲线参数:Order(曲线次数)选择 Linear(一次曲线)、 Square(二次曲线)或Cubic(三次 13、曲线),Origin(原点)选择Ignore (忽略)、Fit(应用)和Force(强制)。如图: 5、 以上参数设置好后,点击键,校正曲线即显示在右下窗 ...
FTIR操作指南
选择单波数法,Wavenumber 中输入定量 波数,或点击 键用鼠标在谱图中选择。如图: 4、 设置校正曲线参数:Order(曲线次数)选择Linear(一次曲线)、 Square(二次曲线)或Cubic(三次曲线),Origin(原点)选择Ignore (忽略)、Fit(应用)和Force(强制)。如图: 5、 以上参数设置好后,点击 键,校正曲线即显示在右下窗...
PerkinElmer Software -First take a background spectrum with the empty tube inside the FTIR spectrometer.-This will automatically save a background transmittance. Add 2-3 drops of HCl to the tube and reinsert it into the FTIR. In the top left corner set the wavenumber from 3500 cm-1 to ...
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The unit for near-, mid-, and far-infrared, the wavenumber (cm-1), is derived from the inverse relationship between wavelength and frequency. Figure 2. Electromagnetic Spectrum FTIR spectroscopy takes advantage of how IR light changes the dipole moments in molecules (Fig. 3) that correspond ...
1. Introduction Characterized by wavelengths longer than the mid-infrared region, the far-infrared region is also referred to as the terahertz region. In recent years, this region has been used to evaluate crystal polymorphs for pharmaceuticals and semiconductor device materials, as well as for arch...
FTIR spectra in the wavenumber between 950 and 1200 cm are considered as the 'fingerprint' region for carbohydrates, which allows the identification of major chemical groups in polysaccharides as the position and intensity of the bands are specific for every polysaccharide. The other typical FT-IR ...
FTIR spectra of spruce, beech, and bamboo MWL''s, representing G, GS and HGS lignins, were recorded and examined in the wavenumber range of 1800 to 700 cm1. The spectra were then submitted to a mathematical self-deconvolution technique in order to resolve the intrinsically overlapped bands. ...