pH对玫瑰红色素紫外和荧光光谱的影响  

Effects of pH on UV-Vis and fluorescence spectra of rose pigment

作　　者：刘松 杨莉[2] 李福成[3] 袁红雁[3] 

机构地区：[1]四川欧华化妆品有限公司,四川成都610000 [2]四川文理学院化学系,四川达州635000 [3]四川大学化工学院,四川成都610065

出　　处：《化学研究与应用》2009年第1期127-130,共4页Chemical Research and Application

摘　　要：Detecting the absorbance and fluorescence intensity of rose pigment ethanol solution at different pH,the results show that rose pigment ethanol solution has optimal absorbance and fluorescence intensity at pH=1.0.It has a maximum absorbance peak at 275nm in ultraviolet area,530nm in visible area,respectively.The maximum excitation wavelength is at 510nm,the maximum emission wavelength is at 570nm in fluorescence spectra.But the intensities of fluorescence and UV-Vis absorbance gradually decrease when pH values are at range of 1.0±3.5.Detecting the absorbance and fluorescence intensity of rose pigment ethanol solution at different pH, the results show that rose pigment ethanol solution has optimal absorbance and fluorescence intensity at pH = 1.0. It has a maximum absorbance peak at 275nm in ultraviolet area,530nm in visible area, respectively. The maximum excitation wavelength is at 510nm, the maximum emission wavelength is at 570nm in fluorescence spectra. But the intensities of fluorescence and UV-Vis absorbance gradually decrease when pH values are at range of 1.0 ± 3.5.

关 键 词：玫瑰红色素 PH 吸光度 荧光 

分 类 号：O657.3[理学—分析化学]