| 蓝宝石3310cm—1红外吸收峰的鉴定意义 |
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| 关键词:natural sapphire heated sapphire IR spectroscopic identification |
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| IR Spectroscopic Absorption Band near 3310cm-1 in Sapphire and Its Identification Significance |
| The identification of a heated sapphire is a difficult problem for gemmologists. In market, jewelers needn't to remark the heated sapphire because there is no key identical proof for it and such a heated sapphire is commonly accepted by people. Never the less,spectroscopy shows that natural sapphirs formed in reduced condition, such as sapphires from Shandong,have absorption bands near 3 310 cm -1 and so do sapphires heated in the reduction condition caused by hydrogen. Not all the surface diffusion treated sapphires will produce such absorption bands. Finally, the encouraging fact is that such absorption bands will vanish if the sample is heated in oxidizing atmosphere. This fact seemsto be an important proof for gemmologists to identify this kind of sapphires. |
| SHEN Mei-dong,YANG Liang-feng.2000.IR Spectroscopic Absorption Band near 3310cm-1 in Sapphire and Its Identification Significance[J].Acta Geoscientica Sinica,21(3):294-299. |
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