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                            Library & Multimedia
 Surface-Enhanced Raman Spectroscopy for Trace Identification of Controlled Substances: Morphine, Codeine, and Hydrocodone
NCJ Number
              233678
Journal

*Journal of Forensic Sciences* Volume: 56 Issue: 1 Dated: January 2011 Pages: 200-207
Author(s)
          Vinesh Rana, M.A.;
                        Maria V. Canamares, Ph.D.;
                        Thomas Kubic, Ph.D.;
                        Marco Leona, Ph.D.;
                        John R. Lombardi, Ph.D.
Date Published

January 2011
Length
              8 pages
Annotation
              This study examined the results of trace identification of controlled substances.
Abstract
              The authors obtain the normal Raman and surface-enhanced Raman spectrum of three controlled substances: morphine, codeine, and hydrocodone. The spectra are assigned with the aid of density functional theory. Because of rather intense fluorescence, normal Raman spectra suffer from poor signal-to-noise, even when differential subtraction techniques are employed. On the other hand, surface enhancement by Ag nanoparticles both enhances the Raman signal and suppresses the fluorescence, enabling far more sensitive detection and identification. The authors also present a set of discriminant bands, useful for distinguishing the three compounds, despite the similarities in their structures. (Published Abstract) Figures, tables, and references
      
  
          Additional Details
Grant Number(s)
        2006-DN-BX-K034
                                80209
                                CHE-0091362
                                CHE-0345987
                                ECS0217646
                                IMR 0526926


  
  
        
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        NIJ-Sponsored


  
  
        
  Publication Type
        Report (Study/Research)


  
  
        
  Award
        Development of Advanced Raman Spectroscopy Methods and Databases for the Evaluation of Trace Evidence and the Examination of Questioned Documents
    
  
  
Date Published: January 1, 2011
    
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