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| 各类金色海水珍珠的呈色属性及UV-NIS 反射光谱 | |
| 引用本文： | 亓利剑,黄艺兰,曾春光.各类金色海水珍珠的呈色属性及UV-NIS 反射光谱[J].宝石和宝石学杂志,2008,10(4). |
| 作者姓名： | 亓利剑 黄艺兰 曾春光 |
| 作者单位： | 1. 同济大学,上海,200092 2. 中国地质大学,湖北,武汉,430074 3. 南洋珠宝学院,新加坡,228208 |
| 摘 要： | 针对各类金色海水珍珠的呈色属性、改色处理及其鉴定问题,采用LA-ICP-MS、拉曼光谱仪、UV-NIS微光谱仪等测试仪器,重点对近期市面上出现的金色海水珍珠与染色处理金色海水珍珠样品的化学成分、拉曼光谱、反射光谱、呈色属性及表面微观特征进行了测试与研究。结果表明,金色海水珍珠样品的化学成分与UV-NIS反射光谱特征在很大程度上依附并继承了金唇贝的基本属性,以356 nm(±2 nm)为中心的吸收谱带可作为识别金色海水珍珠是否染色的诊断性证据之一;颜色欠佳的海水珍珠通常采用人工有机色素予以染金色,经染色处理后的金色海水珍珠样品显示与金色海水珍珠截然不同的呈色属性和UV-NIS吸收谱带。浅表层染色处理金色海水珍珠样品通常在其珍珠表层形成厚约15μm(通常<20μm)、着色相对均匀的金黄色渗色层,其在紫外-可见光范围内呈现2组特征的吸收谱带:一组位于可见光蓝紫区427 nm(±2 nm)处,归因人工染色剂所致;另一组则位于紫外区353 nm(±2 nm)处,为自身的有机致色因子所致;深层染色处理金色海水珍珠样品沿其珍珠表层向内层形成厚约50~80μm、着色均匀的金黄色渗色层,由人工染色剂致特征吸收谱带主要位于可见光... |
| 关 键 词： | 金色海水珍珠 染色处理金色海水珍珠 UV-NIS反射光谱 呈色属性 |
Colouration Attributes and UV-NIS Reflection Spectra of Various Golden Seawater Cultured Pearls |
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| QI Lijian,HUANG Yilan,C.G.Zeng.Colouration Attributes and UV-NIS Reflection Spectra of Various Golden Seawater Cultured Pearls[J].Journal of Gems & Gemmology,2008,10(4). | |
| Authors: | QI Lijian HUANG Yilan CGZeng |
| Affiliation: | 1.Tongji University;Shanghai 200092;China;2.China University of Geosciences;Wuhan 430074;3.Nan Yang Gemological Institute;Singapore 228208;Singapore |
| Abstract: | In view of the colouration attributes,colour alteration and the identification,the chemical compositions,Raman spectra,reflection spectra,colouration attributes and the surface micro-characteristics of the undyed and dyed golden seawater cultured pearl samples on the recent market are investigated by using the LA-ICP-MS,Raman spectrometer,UV-NIS micro spectrometer and the other testing instruments.The results show that the chemical compositions and the features of the UV-NIS reflection spectra of the golden... |
| Keywords: | golden seawater cultured pearl dyed golden seawater cultured pearl UV-NIS reflection spectrum colour attribute |
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