Parallel Factor Analysis as an Analysis Technique for the Ratio of Three-Dimensional Fluorescence Peak in Taihu Lake

The present paper proposes a new method to find the ratio of three-dimensional fluorescence peak.At first,the excitation-emi ss ion fluorescence matrix of water samples was treated with parallel factor analys is(PARAFAC) and then fluorescence peaks intensity and ratio of fluorescence pea k were obtained from the parallel factor analysis model.From the parallel facto r analysis model,the same fluorescence peaks of different water samples lie at the same excitation-emission wavelength and the overlap of different fluorescen c e peaks of the same water sample is reduced.Analysing regional characteristic i n Taihu Lake,the ratio of factor score and the ratio of fluorescence peak showe d strong correlation.