朱砂及其仿制品鉴别  

Identification of Cinnabar and Its Imitation

作　　者：朱红伟[1,2] 程佑法[1] 山广祺[1,2] 

机构地区：[1]国家黄金钻石制品质量监督检验中心山东省计量检测重点实验室,济南250014 [2]山东省社会公正计量行,济南250014

出　　处：《超硬材料工程》2017年第1期59-63,共5页Superhard Material Engineering

摘　　要：对珠宝市场上出现的朱砂及其仿制品进行密度、宝石显微镜、紫外荧光、红外光谱、X荧光能谱测试,结果表明:天然朱砂饰品主要成分为HgS,粒状结构,金刚光泽,具有特征的346cm^(-1)红外吸收峰,在紫外灯下无荧光反应。再造朱砂是利用朱砂的碎块与有机胶混合制成的,紫外灯下呈暗红色荧光,红外吸收光谱显示朱砂的346cm^(-1)吸收峰,并且具有有机胶3060cm^(-1)、2960cm^(-1)、2925cm^(-1)、2860cm^(-1)、1606cm^(-1)、1505cm^(-1)、1382cm^(-1)吸收峰。仿制品并不含有朱砂的成分,主要是利用有机胶混合重晶石和方解石粉末制作而成,在紫外灯下呈亮红色荧光,红外光谱显示有机胶、重晶石和方解石的特征吸收峰,X荧光能谱仪测试主要含有S、Ba、Ca。Cinnabar and its imitation on the market has been tested by density, gem micro- scopes, ultraviolet fluorescence, infrared spectroscopy and X-ray fluorescence spectrosco- py and the result shows that the natural cinnabar consists mainly of HgS and presents granular structure, adamantine luster and a characteristic infrared absorption peak of 346cm-1 and has no fluorescence reaction under ultraviolet light. Reengineering cinnabar is manufactured by mixing cinnabar fragments with organic adhesive, which presents kermesinus fluorescence under ultraviolet light. 346 cm-1 absorption peak of cinnabar as well as 3060 cm-1 , 2960cm-1 , 2925cm-1 , 2860cm-1 , 1606cm-1 , 1505cm-1 , 1382cm-1 ab- sorption peak of organic glue can be observed under infrared absorption spectra. The imi- tation is a combination of barite and calcite powder by organic adhesive without any cinna- bar constituent. It presents a bright red fluorescence under ultraviolet light. Characteristic infrared absorption peaks of organic adhesive, barite and calcite can be observed under in- frared absorption spectra. X fluorescence spectrometer shows that it consists mainly of S, Ba and Ca.

关 键 词：朱砂 鉴别 红外光谱 

分 类 号：TS933.5[轻工技术与工程]