矿物药雄黄的红外及拉曼光谱鉴定

Infrared and Raman Spectroscopic Identification of Mineral Drug Realgar

目的:对3批雄黄生品及1批雄黄饮片进行红外光谱、拉曼光谱研究。方法:利用傅立叶红外光谱法、激光拉曼光谱并结合二阶导数拉曼光谱对各雄黄样品进行鉴别分析。结果:各样品的红外光谱在3 400,1 630 cm-1附近出现了吸收峰,在1 500～400 cm-1也出现了吸收峰,但均不是雄黄的红外特征吸收峰,各样品的拉曼光谱及其二阶导数谱均在182,234,271,342 cm-1等波数位置出现了特征性较强的拉曼振动峰。结论:红外光谱法不适用于雄黄的特征鉴别,拉曼光谱能较好地反映出雄黄的特征吸收峰,具有快速、简便、准确等优点,该法值得在中药鉴定中得到更广泛的应用。

Objective： To research the infrared and Raman spectroscopic of three batches of realgar and one batch of realgar piece. Method： The realgar samples were identified and analyzed by Fourier transform infrared spectroscopy and Raman spectroscopy combine with second derivative Raman spectroscopy. Result： There appear infrared absorption peak near the location of 3 400, 1 630 cm^-1 of each sample; there also appear the absorption peaks in the range of 1 500 cm^-1 to 400 cm^-1. However, none of them is the characteristic infrared absorption peak of realgar. There appear strong characteristic Raman peaks at the wave number location of 182,234,271,342 cm^-1, etc, both in Raman spectroscopy and its second derivative spectra. Conclusion： Infrared spectroscopy is not applicable for identify the characteristics of realgar; Raman spectroscopy can reflect characteristic absorption peaks of realgar better than Infrared spectroscopy, and it has the advantages of fast, easy, accurate, etc. This method is worth to get a wider range of applications in the identification of traditional Chinese medicine.