Determination of Amaranth in cocktail by synchronous three-dimensional fluorescence spectrometry

摘要

Three-dimensional (3D) fluorescence spectra and synchronous 3D fluorescence spectra are used to analyze the concentration of Amaranth in commercial cocktails by Parallel Factor Correction Algorithm. The former average relative error of the Amaranth in the commercial cocktail is 15%, and the latter average relative error is less than 4.0%. The results show that the synchronous fluorescence spectrum can improve the sensitivity and selectivity of the fluorescence spectroscopy technique greatly, and it has obvious advantages on analysis of the complex multi-components system. Finally, the content of Amaranth in the cocktail (about (3:5 +/- 0:2) mg.kg(-1) is much lower than that of the national standard by using synchronous data combined with parallel factor analysis of the content of Amaranth.