鉴别印章真伪或印泥、印油材料是否相同,是侦破和证实经济犯罪的重要技术手段。鉴别印章所用印泥或印油材料是否相同的方法很多,但多为有损检验。本文采用紫外-可见反射光谱及荧光光谱分析法,利用导数光谱,对10个不同品牌的印泥所形成的12个印章样品进行了直接测试,根据被测样品的峰位和半峰宽度,区分鉴别不同牌号的印泥,取得了较好的结果。 Identification of the authenticity of the seal or ink, printing and oil materials are the same, is an important technical means to detect and confirm economic crimes. There are many ways to identify whether the ink used for stamps or ink materials is the same, but most of them are for destructive testing. In this paper, UV-visible reflectance spectroscopy and fluorescence spectroscopy, the use of derivative spectra, 10 different brands of Indian ink formed by the 12 stamp samples were tested directly, according to the sample peak position and half-width, distinguish Different grades of ink, and achieved good results.