天然祖母绿和水热法合成祖母绿的拉曼光谱分析
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摘要
水热法合成祖母绿的化学成分、晶体结构和宝石学性质与天然祖母绿相似,常规宝石学检测项无法有效区分。合成祖母绿的生长环境比天然祖母绿理想,其晶格应力较小,相应的声子寿命较长,对应的拉曼谱峰线宽较窄,因此拉曼光谱半高宽可提供祖母绿是天然或合成的信息。本论文使用德国布鲁克Senterra型激光拉曼光谱仪进行测试分析,发现天然祖母绿的半高宽均在8.5cm-1以上,而水热法合成祖母绿均在8.5cm-1以下。
In comparison to corresponding natural emerald,synthetic emerald by hydrothermal method own basically the same chemical composition,crystal structure and gemological properties.Conventional gemology detections can't effectively distinguish them.The growth environment of synthetic emerald is better than natural emerald,smaller lattice stress,the corresponding phonon lifetime is longer and narrower width corresponding,thus the FWHM of Raman spectroscopy can give reasons about natural or synthetic.we used Germany Bruck Senterra Laser Raman Spectrometer to test and found that the FWHM data of natural emerald is above 8.5cm-1,while the FWHM data of synthetic emerald is below 8.5cm-1.
In comparison to corresponding natural emerald,synthetic emerald by hydrothermal method own basically the same chemical composition,crystal structure and gemological properties.Conventional gemology detections can't effectively distinguish them.The growth environment of synthetic emerald is better than natural emerald,smaller lattice stress,the corresponding phonon lifetime is longer and narrower width corresponding,thus the FWHM of Raman spectroscopy can give reasons about natural or synthetic.we used Germany Bruck Senterra Laser Raman Spectrometer to test and found that the FWHM data of natural emerald is above 8.5cm-1,while the FWHM data of synthetic emerald is below 8.5cm-1.
引文
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[2]石国华.桂林水热法合成祖母绿红外光谱特征及其意义[J].宝石与宝石学杂志,1999,1(1):40-44(Shi Guohua.Ftir features of GuiLin hydrothermallygrown synthetic emerald and its significance[J].Journal of Gem and Gemmology,1999,1(1):40-44)
[3]李娅莉.天然祖母绿、合成祖母绿和绿色绿柱石颜色的对比研究[J].宝石与宝石学杂志,1999,1(1):50-53(Li Yali.Comparative study on the color of natural emerald,synthetic emerald and green beryl[J].Journal of Gem and Gemmology,1999,1(1):50-53)
[4]祖恩东,孙一丹,张鹏翔.天然、合成红宝石的拉曼光谱分析[J].光谱学与光谱分析,2010,30(8):2164-2166(Zu Endong,Sun Yidan,Zhang Pengxiang.The analysis of natural and synthetic ruby by Raman spectra[J].Journal of Spectroscopy and Spectral Analysis,2010,30(8):2164-2166)
[5]Hagemann H,Lucken A,Bill H,et al.Raman Spectra of Beryl and Bazzite[J].Phys.and Chem.miner.,1990,17:395-401.
[6]邵慧娟,亓利剑,钟倩,等.俄罗斯富铁型水热法合成祖母绿特征研究[J].宝石与宝石学杂志,2014,16(1):26-34(Shao Huijuan,Qi Lijian,Zhong Qian,et al.Study on characteristics of iron-rich hydrothermal synthetic emerald from Russia[J].Journal of Gem and Gemmology,2014,16(1):26-34)
[2]石国华.桂林水热法合成祖母绿红外光谱特征及其意义[J].宝石与宝石学杂志,1999,1(1):40-44(Shi Guohua.Ftir features of GuiLin hydrothermallygrown synthetic emerald and its significance[J].Journal of Gem and Gemmology,1999,1(1):40-44)
[3]李娅莉.天然祖母绿、合成祖母绿和绿色绿柱石颜色的对比研究[J].宝石与宝石学杂志,1999,1(1):50-53(Li Yali.Comparative study on the color of natural emerald,synthetic emerald and green beryl[J].Journal of Gem and Gemmology,1999,1(1):50-53)
[4]祖恩东,孙一丹,张鹏翔.天然、合成红宝石的拉曼光谱分析[J].光谱学与光谱分析,2010,30(8):2164-2166(Zu Endong,Sun Yidan,Zhang Pengxiang.The analysis of natural and synthetic ruby by Raman spectra[J].Journal of Spectroscopy and Spectral Analysis,2010,30(8):2164-2166)
[5]Hagemann H,Lucken A,Bill H,et al.Raman Spectra of Beryl and Bazzite[J].Phys.and Chem.miner.,1990,17:395-401.
[6]邵慧娟,亓利剑,钟倩,等.俄罗斯富铁型水热法合成祖母绿特征研究[J].宝石与宝石学杂志,2014,16(1):26-34(Shao Huijuan,Qi Lijian,Zhong Qian,et al.Study on characteristics of iron-rich hydrothermal synthetic emerald from Russia[J].Journal of Gem and Gemmology,2014,16(1):26-34)