Application of parallel factor analysis to total synchronous fluorescence spectrum of dilute multifluorophoric solutions: Addressing the issue of lack of trilinearity in total synchronous fluorescence data set

作者：Kumar Keshav^*; Mishra Ashok Kumar

来源：Analytica Chimica Acta, 2012, 755: 37-45.

DOI：10.1016/j.aca.2012.10.024

• PARAFAC
• TSF spectroscopy
• Synchronous fluorescence
• Trilinear
• Three-way array
• EEMF layout

In recent years, total synchronous fluorescence (TSF) spectroscopy has become popular for the analysis of multifluorophoric systems. Application of PARAFAC, a popular deconvolution tool, requires trilinear structure in the three-way data array. The present work shows that TSF based three-way array data set of dimension sample x wavelength x Delta lambda does not have trilinear structure and hence it should not be subjected to PARAFAC analysis. This work also proposes that a TSF data set can be converted to an excitation-emission matrix fluorescence (EEMF) like data set which has trilinear structure, so that PARAFAC analysis can be performed on it. This also enables the retrieval of PARAFAC-separated component TSF spectra.

• 出版日期2012-11-28