一种商业名为“象骨”材料的谱学分析  

The Spectrum Characteristic Analysis of the Material Whose Commercial Name is “Elephant Bone”

作　　者：余炼钢 YU Liangang(The Dehong Teachers’College ,Dehong Yunan 678400 , China)

机构地区：[1]德宏师范高等专科学校

出　　处：《光散射学报》2019年第2期192-198,共7页The Journal of Light Scattering

基　　金：德宏师范高等专科学校科研基金项目(项目编号:XJ201805)

摘　　要：现如今一种商家称为“象骨”的工艺品在珠宝市场上十分普遍,仅用常规技术无法准确鉴定,为弄清此类工艺品的材料属性,本文通过宝石学常规测试、红外光谱(FTIR)、拉曼光谱(Raman).X射线荧光光谱(EDXRF)等技术手段,分析其谱学特征,并与象牙进行了比较°研究结果表明:此类工艺品材料折射率RI:155土,呈较强蓝白色紫外荧光,具有断续平直的微裂纹。FTIR、Raman、EDXRF分析揭示由生物成因磷酸钙和胶原蛋白类有机物构成,含主要微量元素Al.Zn.Sr,物质组成与象牙相似。以无勒兹纹,缺少微量元素Mg、Si,主量元素Ca和P含量高于象牙,红外吸收光谱1500.1700cm1之间指示胶原蛋白酰胺键C-O.C-H伸缩振动,及N-H面内弯曲振动的吸收峰明显弱于象牙等特征,可与象牙相区分。据其表面微裂纹、折射率以及物质组成等特征推断为骨制品。由于尚无象骨标准物质及特征数据做比对,笔者认为下一步通过市场调研掌握其产地、供货渠道、生产过程等真实来源信息是更准确鉴定此类工艺品材料的关键。A kind of crafts called"elephant bone"is very common in nowadays’ jewelry market.It is impossible for us to identify it only by conventional techniques.To clarify its material properties,the spectral properties of this material and ivory were analyzed and compared in the present paper through the gemological tests,infrared spectrum,Raman spectrum and X-ray fluorescence spectroscopy.The results showed that this type of material has a refractive index RI:1.55±,showing a strong blue-white ultraviolet fluorescence,and has intermittent straight microcracks.FTIR,Raman and EDXRF test results showed that it is composed of biologically occurring calcium phosphate and collagen organic matter,as well as the mian trace elements Al、Zn、Sr,and its material composition is similar to that of ivory.However,due to having no Retzius stripes,lack of the essential trace elements Mg,Si,and Its main elements Ca and P are higher than ivory.In the infrared absorption spectrum,the absorption peaks of C-O,C-H stretching vibration and N-H bending vibration of collagen amide bond between 1500-1700cm^-1 were significantly weaker than those of ivory.Together,these characteristics make it distinguishable from ivory.It can be inferred as a bone product based on its surface microcracks,refractive index,and material composition.However,as there are not yet standard materials and data of elephant bone for reference,the author believes that is is very essential to figure the real source information of its origin,supply channels and process flow through market research to achieve more accurate identification of such handicraft materials.

关 键 词："象骨"工艺品 谱学特征 物质组成 材料属性 

分 类 号：O657.3[理学—分析化学]