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Aim: To get the IR spectrums of Agrimonia Pilosa Ledeb (APL) from china and korea areas, and to find out the characters of IR spectrums through the content of different chemical constituents, provide a fast and effective analysis method monitor the inherent qualities of traditional Chinese medicine-APL. Method: Fourier transform infrared spectroscopy (FT-IR) was applied to detect sample of APL from...
We have investigated the organic solid-state chemical reaction of selected organic materials using THz time-domain spectroscopy technique. The THz spectra of the resultant materials show a new absorption peaks in the spectral range from 0.5 to 4.0 THz.
Due to its inherent sensitivity to both subtle changes in crystal structure and the hydrogen bonding network of organic molecular crystals and moisture, terahertz time-domain spectroscopy (THz-TDS) is a very promising technique to study physico-chemical changes during stability testing of pharmaceutical dosage forms. Using a variable temperature and humidity chamber the effects of moisture and temperature...
Small organic molecules, including acetone, methanol, isopropanol, methane, ethane, and ethylene, can be monitored in real time using a new broadly-tunable mid-infrared laser source. This technique will lead to better process control.
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