红外光谱在真伪鉴别上的应用

Application of Infrared Spectrum in Judgement of Counterfeits

由于使用傅立叶变换红外光谱和漫反射装置 ,可以在不破坏样品原状的情况下快速、方便地得到珠宝、纸币、邮票的红外光谱图 ,因此尝试将红外光谱分析用于珠宝、纸币、邮票等贵重物品的真伪鉴别。实验中发现一些特征吸收峰规律 ,如珠宝的真伪品在红外光谱的指纹区吸收峰特征有明显差别 ,而纸币、邮票的指纹区差别虽然较小 ,但仍可作为鉴别的依据。研究表明 ,红外光谱分析可作为其它鉴别真伪方法的一种补充手段配合使用 ,使鉴别的科学性。

Fourier-translation Infrared Spectrography combined with Diffuse Reflection Apparatus can obtain the infrated spectrum of samples in original state without destruction quickly and conveniently.So attempts has been carried out to judge the counterfeit of jewels,bank notes,stamps and others.The experimental results show that there are some characteristic absorption rules in the infrared spectrum analysis.Such as the finger print region absorptions of infrared spectrum between the true and false jewels different obviously.The bank notes and stamps seem not so deviately but still can be used as detective criterion.The study shows that the infrared spectrum analysis can play a supporting role in the judgement of counterfeits by other methods and make them more scientifically and correctly.