Substituted naphthoquinones as novel amino acid sensitive reagents for the detection of latent fingermarks on paper surfaces

Jelly, R, Lewis, S. W., Lennard, C., Lim, K. F. and Almog, J. 2010, Substituted naphthoquinones as novel amino acid sensitive reagents for the detection of latent fingermarks on paper surfaces, Talanta, vol. 82, no. 5, pp. 1717-1724.

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Title Substituted naphthoquinones as novel amino acid sensitive reagents for the detection of latent fingermarks on paper surfaces
Author(s) Jelly, R
Lewis, S. W.
Lennard, C.
Lim, K. F.
Almog, J.
Journal name Talanta
Volume number 82
Issue number 5
Start page 1717
End page 1724
Publisher Elsevier BV
Place of publication Amsterdam, The Netherlands
Publication date 2010-10-15
ISSN 0039-9140
1873-3573
Keyword(s) naphthoquinones
latent fingermarks
fingerprints
amino acids
paper surfaces
forensic science
Summary In this paper, we present our preliminary studies into naphthoquinones as novel reagents for the detection of latent fingermarks on paper. Latent fingermarks deposited on paper substrates were treated with solutions of selected naphthoquinones in ethyl acetate/HFE-7100, with subsequent heating. The selected compounds were 1,4-dihydroxy-2-naphthoic acid, 1,2-naphthoquinone-4-sulfonate, 2-methoxy-1,4-naphthoquinone and 2-methyl-1,4-naphthoquinone. All of the tested compounds yielded purple-brown visible fingermarks, which also exhibited photoluminescence when illuminated with a high intensity filtered light source at 555nm and viewed through red goggles. Indirect heat using an oven at 150 ◦C for 1 h was found to be superior to direct heat with an iron, which while providing faster development lead to increased levels of background colouration. Luminescence spectrophotometry revealed differences in photoluminescence characteristics for fingermarks developed with the different naphthoquinones, with excitation over the range 530–590 nm. Luminescence spectrophotometry of developed lysine, glycine and serine spots on paper was used to confirm that the naphthoquinones were reacting with amino acids in the latent fingermark.

Language eng
Field of Research 039902 Forensic Chemistry
Socio Economic Objective 970103 Expanding Knowledge in the Chemical Sciences
HERDC Research category C1 Refereed article in a scholarly journal
HERDC collection year 2010
Copyright notice ©2010, Elsevier B.V.
Persistent URL http://hdl.handle.net/10536/DRO/DU:30030439

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