文献类型：期刊文献

中文题名：拉曼光谱(785nm)在翡翠检测中的应用

英文题名：Application of Raman Spectrometer(785 nm)to Jadeite Test

作者：范建良[1];郭守国[1];刘学良[1]

机构：[1]华东理工大学宝石检测中心,上海200237

年份：2007

卷号：27

期号：10

起止页码：2057

中文期刊名：光谱学与光谱分析

外文期刊名：Spectroscopy and Spectral Analysis

收录：CSTPCD;;EI(收录号：20074710937237);Scopus;WOS:【SCI-EXPANDED(收录号:WOS:000250794700037)】；北大核心:【北大核心2004】；CSCD:【CSCD2011_2012】；PubMed;

基金：西部基金项目(045258044)资助

语种：中文

中文关键词：拉曼光谱法;翡翠;处理

外文关键词：Raman spectrometry; Jadeite; Treatment

摘要：翡翠是一种名贵玉石,被誉为"玉石之冠"。随着翡翠处理技术的不断提高和处理翡翠的流入市场,给翡翠的检测带来了极大的困难。作者研究工作使用的拉曼光谱仪(785nm)秉承了以往测试所用拉曼光谱仪(514nm)无损、快速、准确的特点,还具有荧光弱的优点。通过大量翡翠样品的测定,证实拉曼光谱仪(785nm)是一种有效检测翡翠是否是天然产的仪器,通过测试结果分析得出:天然绿色翡翠荧光极强,其取决于翡翠晶格中Cr3+的含量,其他颜色翡翠显示硬玉的特征拉曼移位1045,698,373cm-1。染色翡翠绿色部位拉曼信号弱,所需积分时间长,拉曼位移高频区产生多个拉曼峰,有时可见有机拉曼峰;荧光现象明显及拉曼峰的湮没,说明翡翠经有机物充填和酸处理致表层晶体结构破坏。
Jadeite is a greatly appreciated gemstone and often referred to as ＂the king of jade＂. Because of the advances in processing the treated jadeite is becoming more and more difficult for identification; NIR（785 nm）Raman spectrometer exhibits advantage of non-destruction, quickness, accurateness, and weak fluorescence interferences. This work reports such a research conducted using a NIR Raman spectrometer for a large number there after performed, it is evident that the instrumentation and of jadeite samples. Based on the spectra collected and analysis analysis methodology used have provided great information and assessment assistance in the application. It was found that the spectral response in the green area of a natural jadeite is much stronger in intensity than that in the white area. This is attributed to the key factor, the content of Cr^3＋ in the area. In contrast the spectral response in the green area of a treated jadeite is much weaker and additional Raman peaks start to show up on the high Raman shift side. This is the evidence of added fluorescence phenomenon and epoxyresin. It was also discovered that certain Raman features disappear compared to a natural sample. This indicates that the jadeite has been treated with acid and filled with colorless glue, which io turn destroyed the original exterior structure of a jadeite.