| 珍珠及贝壳珍珠层文石的异常红外光谱特征 |
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| 引用本文： | 张刚生,丁世磊,贾太轩,郝玉兰.珍珠及贝壳珍珠层文石的异常红外光谱特征[J].宝石和宝石学杂志,2005,7(3):7-9. |
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| 作者姓名： | 张刚生 丁世磊 贾太轩 郝玉兰 |
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| 作者单位： | 广西大学化学化工学院,广西,南宁,530004 |
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| 摘 要： | 对3种类型的文石即珍珠和贝壳珍珠层、珊瑚及天然无机文石的FTIR光谱进行了测量和对比分析.结果表明,珍珠和贝壳珍珠层文石的v2频率平均值为863.6 cm-1,较珊瑚及天然无机文石存在明显的蓝移现象,蓝移值分别为7.9 cm-1和9.1 cm-1.珍珠和贝壳珍珠层文石这种异常的红外光谱频移特征可能与这类生物成因文石的低结晶度、纳米粒径及晶格畸变有关.
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| 关 键 词： | 贝壳珍珠层 珍珠 FTIR光谱 频率位移 贝壳珍珠层 文石 异常 红外光谱特征 Bivalve Shells Layers FTIR Spectra 晶格畸变 粒径 纳米 结晶度 生物成因 光谱频移 移值 蓝移现象 存在 平均值 频率 结果 分析 |
| 文章编号： | 1008-214X（2005）03-0007-03 |
| 收稿时间： | 2005-06-27 |
| 修稿时间： | 2005年6月27日 |
Unusual Characteristics of FTIR Spectra of Aragonites from Nacreous Layers of Pearls and Bivalve Shells |
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| ZHANG Gang-Sheng,DING Shi-lei,JIA Tai-xuan,HAO Yu-lan.Unusual Characteristics of FTIR Spectra of Aragonites from Nacreous Layers of Pearls and Bivalve Shells[J].Journal of Gems & Gemmology,2005,7(3):7-9. |
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| Authors: | ZHANG Gang-Sheng DING Shi-lei JIA Tai-xuan HAO Yu-lan |
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| Abstract: | The FTIR spectra of aragonites from different origins, which include aragonites from nacreous layers of pearls and bivalve shells, coral skeletons and natural inorganic aragonites, are measured and comparatively analyzed. The results show that the v2 vibrational frequency of aragonites from nacreous layer has the mean value of 863.6 cm^-1 which is about 7.9 cm^-1and 9.1 cm^-1, higher than that of aragonite from coral skeleton and natural inor ganic aragonite respectively. The unusual characteristics of v2 vibrational frequency of aragonites from nacreous layer is probably resulted from the low crystallinity, crystal lattice distortion and nanometer size of aragonites. |
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| Keywords: | nacreous layer of shell pearl FTIR spectrum frequency shift |
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