CHEN Long, LEI Mi, HUANG Bi-sheng, et al. Identification of Fluoritum by X-ray Diffraction and Raman Spectrum[J]. Chinese journal of experimental traditional medical formulae, 2015, 21(19): 42-47.
DOI:
CHEN Long, LEI Mi, HUANG Bi-sheng, et al. Identification of Fluoritum by X-ray Diffraction and Raman Spectrum[J]. Chinese journal of experimental traditional medical formulae, 2015, 21(19): 42-47. DOI: 10.13422/j.cnki.syfjx.2015190042.
Identification of Fluoritum by X-ray Diffraction and Raman Spectrum
Objective: To analyze X-ray diffraction (XRD) and Raman spectrum fingerprint characteristics of Fluoritum
and to provide a reference for its fast and effective identification. Method: XRD was used to determine phase composition and the content of CaF2 from Fluoritum
Calcite and Quartz with Cu target Kα radiation as incident light source
filter of Ni
40 kV as X-ray tube voltage
40 mA as the current
1 degree as divergence slit (SD) and scattering slit (SS)
0.3 mm as receiving slit.On this basis
Raman spectrum characteristics of Fluoritum in the range of 61-2 695 cm-1
with 785 nm as wavelength of excitation light source
300 mV as laser power
1.5 m optical fiber probe and laser intensity of 100%. Result: Analysis of XRD indicated that samples 1-15 were Fluoritum
samples 16-20 were adulterants and sample 21 was counterfeiter.Fluoritum had 3 groups of characteristic peaks of Raman spectrum in the range of 310-325
720-1 500
1 700-1 900 cm-1
which can be used to identify its authenticity. Conclusion: XRD can accurately determine phase composition of Fluoritum
which provides original sample data to identify Fluoritum by Raman spectrum.As a way of fast analysis technology
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