摘要
通过红外光谱、拉曼光谱、^(13)C核磁共振波谱三种谱学分析方法,对缅甸琥珀及半石化树脂样品进行了对比测试,分析结果表明:红外光谱中由环上C-H面外变形振动致886 cm-1红外吸收峰是区分缅甸琥珀和半石化树脂的重要依据;半石化树脂拉曼光谱中1 385~1 316 cm-1、801~677 cm-1及605~530 cm-1等一系列未挥发的萜类化合物谱带的出现也是其与缅甸琥珀区分的重要特征;13C核磁共振波谱中δ=16×10^(-6)~18×10^(-6)、δ=79×10^(-6)及δ=215×10^(-6)~220×10-6等处化学位移的出现指示了缅甸半石化树脂石化程度的不完全,与红外光谱和拉曼光谱测试结果有着很好的对应关系。
By three spectral analysis methods of infrared, Raman and 13CNMR, the samples of amber and subfossil resin in Burma were testedand compared.The results showed that the infrared absorption peakcaused by the external deformation and vibration of C-H in the infraredspectrum was an important basis for distinguishing Burma amber andsubfossil resin; The emergence of a series peaks of terpenoids, such as1 385- 1 316 cm-1, 801-677 cm-1 and 605-530 cm-1 in the Raman spectraof subfossil resin, is also an important feature of the distinction betweenBurma amber and subfossil resin; the appearance of the chemical shiftsof δ = 16×10^-6-18×10^-6, δ = 79×10^-6, δ = 215×10^-6-220×10^-6 in 13C NMRspectroscopy suggesting the immature of subfossil resin, which is ingood correspondence with the results of infrared spectrum and Ramanspectrum.
作者
涂彩
汤红云
招博文
吕晓瑜
钱伟吉
Tu Cai;Tang Hongyun;Zhao Bowen;Lü Xiaoyu;Qian Weiji(National Center of Quality Supervision ＆Inspection on Gold-Sliver Products,Shanghe)
出处
《上海计量测试》
2018年第5期16-20,共5页
Shanghai Measurement and Testing
基金
上海市质量技术监督局科研项目(2016-32)
