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                            Library & Multimedia
 Nondestructive Total Excitation-Emission Fluorescence Microscopy Combined With Multi-Way Chemometric Analysis for Visually Indistinguishable Single Fiber Discrimination
NCJ Number
              250031
Journal

*Analytical Chemistry* Volume: 88 Issue: 5 Dated: March 2016 Pages: 2967-2975
Author(s)
          A. M. de la Pena;
                        N.  Mujumdar
Date Published

March 2016
Length
              9 pages
Annotation
              This study examined the potential of total excitation-emission fluorescence microscopy combined with multiway chemometric analysis for the nondestructive forensic analysis of textile fibers.
Abstract
              The four pairs of visually indistinguishable fibers consisted of nylon 361 dyed with acid yellow 17 and acid yellow 23, acetate satin 105B dyed with disperse blue 3 and disperse blue 14, polyester 777 dyed with disperse red 1 and disperse red 19, and acrylic 864 dyed with basic green 1 and basic green 4. Excitation emission matrices were recorded with the aid of an inverted microscope and a commercial spectrofluorimeter. The full information content of excitation-emission matrices was processed with the aid of unsupervised parallel factor analysis (PARAFAC), PARAFAC supervised by linear discriminant analysis (LDA), and discriminant unfolded partial least-squares (DU-PLS). The ability of the latter algorithm to classify the four pairs of fibers demonstrates the advantage of using the multidimensionality of fluorescence data formats for the nondestructive analysis of forensic fiber evidence. (Publisher abstract modified)
      
  
          Additional Details
Grant Number(s)
        2011-DN-BX-K553


  
  
        
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        NIJ-Sponsored


  
  
        
  Publication Type
        Research (Applied/Empirical)
                                Report (Study/Research)
                                Report (Grant Sponsored)
                                Program/Project Description


  
  
        
  Award
        Comparison of Microspectrophotometry and Room-Temperature Fluorescence Excitation-Emission Matrix Spectroscopy for Non-Destructive Forensic Fiber Examination
    
  
  
Date Published: March 1, 2016
    
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