岛津FTIR培训讲义 岛津FTIR-8400S/IRPrestige-21培训 岛津国际贸易（上海）有限公司 分析中心
These types of absorbances are typically seen below 1500cm-1 in the infrared spectrum; however, some functional groups will absorb in this region as well. As a result, this region of the spectrum is less reliable for identification, but the absence of a band is often more indicative than ...
By comparing the ‘fingerprint region’ of a obtained sample to that of a standard sample, researchers can also identify an unknown polymer. In the mean time, researchers can use FTIR to measure the concentration of a certain functional group, to determine the extent of reaction. For example,...
Zoom controls and time-region selection allow for targeted analysis of areas of interest Smart Pin spectra across time intervals or events for easy data comparison Report and Share Reports and presentations are created with the click of a button, allowing critical reaction knowledge to be easily ...
ftir分析方法（FTIRanalysismethod）ftir分析方法（FTIR analysis method）Two, group frequency and characteristic absorption peak Each molecule of the constituent molecule has its specific infrared absorption region. According to the nature of chemical bond, which can be divided into four regions: 4000 - ...
27、h band near 3000 cm-1.AROMATIC Look for the benzene, C:C, double bonds which appear as medium to strong absorptions in the region 1650-1450 cm1 The CH stretch band is much weaker than in alkenes5. If none of the previous groups can be identified, you may have an alkaneALKANE Th...
Mid Infrared covers the region from about 200 to 5000 cm-1 Our FT spectrometers allow us to measure transitions from the visible (25,000 cm-1) through the far-IR (50 cm-1) spectral range. These regions yield specific information regarding functional groups, their associations and relative ...
The FTIR spectrum for the biodiesel revealed the functional groups with characteristics bands, C=O, -(CH_(2))_(n)-, C-O, C=C and C-H in the spectrum. The absorbance intensity (peak), at a region where strong absorption of FAME occurred in each blend spectrum increases with biodiesel...
By comparing the fingerprint region of a obtained sample to that of a standard sample, researchers can also identify an unknown polymer. In t 3、he mean time, researchers can use FTIR to measure the concentration of a certain functional group, to determine the extent of reaction. For example...
Figure 4. FTIR Spectroscopy functional group correlation table Near-IR Spectroscopy The Near-IR portion of the electromagnetic spectrum falls between 4,000 to 12,800 cm-1. This region consists of overtones (two of the same vibrational modes occurring simultaneously) and combinations (two different ...