The Research and Application of the Nano Rare Earth Fluorescent Probes in the Ferulic Acid Detection

In this study, the fluorescence properties of Ferulic acid-Tb3+-SDBS system were studied. It was found that the addition of surfactant SDBS could enhance the fluorescence intensity of the system, a new pharmaceutical analytic method for the trace detection of ferulic acid content of drugs was also established. The fluorescence intensity of system with the excitation wavelength of 336nm and the emission wavelength of 545nm was monitored. The results showed that there was a good linear relationship between ferulic acid and the fluorescence intensity of the system while the concentration of ferulic acid in the range of 1x10(-8)similar to 4x10(-6)mol/L. The linear equation: If = 22.59 C+36.075, the correlation coefficient: r = 0.997.