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    STUDIA CHEMIA - Issue no. 1 / 2019  
         
  Article:   A PILOT STUDY FOR THE USE OF COUMARIN-480 TO ENHANCE THE FINGERMARKS.

Authors:  MUHAMMAD YASEEN, NOUMAN RASOOL, ZAHID FAROOQ, SHAHBAZ NAZIR, SHUMAILA CHOHAN.
 
       
         
  Abstract:  
DOI: 10.24193/subbchem.2019.1.15
pp. 185-196
Published Online: 2019-03-30
Published Print: 2019-03-30
VIEW PDF: chem.ubbcluj.ro/~studiachemia/chemia2019_1.html

A new alternative super glue post-treatment method for the enhancement of fingermarks over two different non-porous surfaces including glass slides and high density polyethylene (HDPE) sheets have been investigated. This is the first documented application of 2,3,6,7-tetrahydro-9-methyl-1H,5H-quinolizino(9,1-gh)coumarin or coumarin-480 for the enhancement of cyanoacrylate fumed fingermarks. Coumarin-480 in ethanol was used as cyanoacrylate post-treatment dye. Fingermarks of seven different donors were aged for three different time periods (1 day, 1 week and 4 weeks) over non-fluorescent glass slides and HDPE sheets and developed with cyanoacrylate fumes. Upon staining with coumarin-480, fingermarks of varying qualities were observed under long UV radiations. Rhodamine 6G was used to assess the relative sensitivity of the coumarin-480 for the enhancement cyanoacrylate developed fingermarks. Pseudo-operational trials were conducted on glass bottles and high density polyethylene shopping bags. Coumarin-480 produced superior enhancement on HDPE shopping bags and glass bottles than the rhodamine 6G.

Keywords: Fingermarks enhancement, Cyanoacrylate post treatment dye, Coumarin-480, Fluorescent dye
 
         
     
         
         
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