文献类型：期刊文献

中文题名：黄色钙铝榴石多晶质集合体的拉曼无损检测

英文题名：Identifying Yellow Essonite Aggregation Nondestructively by Raman Spectra

作者：范建良[1];刘学良[1];郭守国[1]

机构：[1]华东理工大学宝石检测中心,上海200237

年份：2008

卷号：38

期号：1

起止页码：20

中文期刊名：激光与红外

外文期刊名：Laser & Infrared

收录：CSTPCD;;Scopus;北大核心:【北大核心2004】；CSCD:【CSCD2011_2012】；

语种：中文

中文关键词：钙铝榴石;翡翠;符山石;拉曼光谱

外文关键词：essonite; jadeite ;idocrase; raman spectrum

摘要：目前市场上出现了一些与黄褐色翡翠非常相似的玉石品种——多晶质的黄色钙铝榴石,与符山石相近的物理参数,常规鉴定难度较大。本文采用BTR111-785MiniRam型拉曼光谱仪对颜色均为黄色的钙铝榴石多晶质集合体和单晶体、翡翠、符山石进行测定和分析,得到黄色钙铝榴石多晶质集合体与单晶体具有相同的特征拉曼位移874cm-1,543cm-1,370cm-1,且在874cm-1的左侧产生肩峰820cm-1;黄色翡翠具有硬玉结构的特征拉曼位移1033cm-1,694cm-1,371cm-1;而黄色符山石具有特征拉曼位移634cm-1和925cm-1。通过特征拉曼位移的明显差异,可有效、无损地将三者鉴别。
Yellow essonite aggregation is being in jewelry market, which has the appearance extremely like yellow jadeite＇s ,and the physics parameters near to idocrase＇s, so it＇s very difiqcuh to identify them by common instruments. This paper was based on Raman spectra of aggregation and single crystal of essonite,jadeite,idocrase tested by BTR111 - 785MiniRam Raman spectroscope. It was found that aggregation and single crystal of essonite have the same diagnostic Raman shifts 874cm ^-1,543cm^-1, 370cm^-1, and Raman acromion 820cm^-1 at nearside of 874cm^-1. Yellow jadeite has the diagnostic Raman shifts 1033cm^-1 ,694cm^-1,371cm^-1. And yellow idocrase has the diagnostic Raman shifts 634cm^-1 ,925cm^-1. It could be effectively and nondestructively identify those three gemstones by contrasting their each diagnostic Raman shifts.