The MFA and MFB had strong blue fluorescence spectra and ultraviolet/visible spectra (maxium UV/vis wavelength at 370nm),with maximum excitation and emissionat 396 nm and 460 nm,repectively(Huang et al.,2008). When response values of MFA and MFB were compared by ultraviolet and fluorescence detors connected in series,than that of the former (Huang et al.,2008).