Yu-yang ZHANG, Mei-hua CHEN, Shuang YE, Jin-yu ZHENG. Research of Geographical Origin of Sapphire Based on Three-Dimensional Fluorescence Spectroscopy: A Case Study in Sri Lanka and Laos Sapphires[J]. Spectroscopy and Spectral Analysis, 2022, 42(5): 1508
- Spectroscopy and Spectral Analysis
- Vol. 42, Issue 5, 1508 (2022)
Fig. 1. Sapphires from Sri Lanka (a) and Laos (b)
Fig. 2. UV-Vis-NIR spectra of Sri Lanka sapphires (a) and Laos sapphires (b)
Fig. 3. Fluorescence reaction under LW-UV and SW-UV of Sri Lanka sapphires
Fig. 4. Three-dimensional fluorescence spectra of metamorphic-type sapphires from Sri Lanka
Fig. 5. Emission fluorescence spectra excited by (a) 320 nm, (b) 360 nm, (c) 410 nm, (d) 450 nm of metamorphic-type sapphires from Sri Lanka
Fig. 6. Three-dimensional fluorescence spectra of basalt-related-type sapphires from Laos
Fig. 7. Emission fluorescence spectra excited by 360 nm of basalt-related-type sapphires from Laos
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Table 1. Chemical component of samples (ppma)
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