Dalbergia cochinchinensis small decorative article identification method based on infrared spectrum
A technology of infrared spectroscopy and Dalbergia cochinchinensis, applied in the field of wood identification, can solve the problems of long detection time, widening of absorption band, high cost, etc., and achieve the effect of objective and accurate experimental results, fast analysis speed and small sample size
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Embodiment 1
[0031] A method for identifying small ornaments of Dalbergia cochinchinensis based on infrared spectroscopy, comprising:
[0032] Step 1: Turn on the infrared lamp, take about 100 mg of spectrally pure potassium bromide and grind it to a particle size of less than 2.5 μm within the irradiation range of the infrared lamp, transfer the powder to the tableting mold, assemble the mold and put it into the tablet as a whole In the machine, a pressure of about 8t is applied, and the pressure is unloaded after about 1min to obtain transparent or translucent potassium bromide flakes. Put the potassium bromide thin slice on the sample holder in the sample chamber of the infrared spectrometer for testing, and the scanning range of the infrared spectrum is set to 4000-400cm -1 , with a spectral resolution of 4 cm -1 , accumulatively scanned 16 times to obtain the infrared spectrum background image of the measured sample.
[0033] Step 2: Scrape about 1-5 mg of wood powder sample from a ...
Embodiment 2
[0037] A method for identifying small ornaments of Dalbergia cochinchinensis based on infrared spectroscopy, comprising:
[0038] Step 1: Turn on the infrared lamp, take about 100 mg of spectrally pure potassium bromide and grind it to a particle size of less than 2.5 μm within the irradiation range of the infrared lamp, transfer the powder to the tableting mold, assemble the mold and put it into the tablet as a whole In the machine, a pressure of about 8t is applied, and the pressure is unloaded after about 1min to obtain transparent or translucent potassium bromide flakes. Put the potassium bromide thin slice on the sample holder in the sample chamber of the infrared spectrometer for testing, and the scanning range of the infrared spectrum is set to 4000-400cm -1 , with a spectral resolution of 4 cm -1 , accumulatively scanned 16 times to obtain the infrared spectrum background image of the measured sample.
[0039] Step 2: Scrape about 1-5 mg of wood powder sample from th...
Embodiment 3
[0043] A method for identifying small ornaments of Dalbergia cochinchinensis based on infrared spectroscopy, comprising:
[0044] Step 1: Turn on the infrared lamp, take about 100 mg of spectrally pure potassium bromide and grind it to a particle size of less than 2.5 μm within the irradiation range of the infrared lamp, transfer the powder to the tableting mold, assemble the mold and put it into the tablet as a whole In the machine, a pressure of about 8t is applied, and the pressure is unloaded after about 1min to obtain transparent or translucent potassium bromide flakes. Put the potassium bromide thin slice on the sample holder in the sample chamber of the infrared spectrometer for testing, and the scanning range of the infrared spectrum is set to 4000-400cm -1 , with a spectral resolution of 4 cm -1 , accumulatively scanned 16 times to obtain the infrared spectrum background image of the measured sample.
[0045] Step 2: Scrape about 1-5 mg of wood powder samples from t...
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