Laser & Optoelectronics Progress, Volume. 58, Issue 5, 0530001(2021)
Comparative Study on Spectral Characteristics of Natural and Flame-Melting Synthetic Spinels
Today's market contains large quantities of flame-melting synthetic spinel, which cannot be effectively identified by conventional methods alone. To accurately identify natural and flame-melting synthetic spinels, we used Fourier transform infrared spectroscopy, X-ray fluorescence spectroscopy, absorption spectroscopy, and laser Raman spectroscopy to study the molecular structures, chemical compositions, and color mechanisms of the spinel specimens. The full-width-at-half-maximum (FWHM) was obtained by Lorentz fitting of the 405 cm-1 peak in the Raman spectrum and analyzed by one-way ANOVA(analysis of variance). Although the conventional gemological characteristics of natural spinel and flame-melting synthetic spinel were almost identical, there are significant differences in molecular structures, chemical compositions, color mechanisms, and FWHMs. The results provide a theoretical basis for distinguishing natural spinel from flame-melting synthetic spinel.
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Shanshan He, Pan Cao, Honglin Tan, Endong Zu. Comparative Study on Spectral Characteristics of Natural and Flame-Melting Synthetic Spinels[J]. Laser & Optoelectronics Progress, 2021, 58(5): 0530001
Category: Spectroscopy
Received: Jul. 6, 2020
Accepted: Aug. 13, 2020
Published Online: Apr. 19, 2021
The Author Email: Zu Endong (zend88@163.com)