Evaluation of one-step luminescent cyanoacrylate fuming.
One-step luminescent cyanoacrylates have recently been introduced as an alternative to the conventional cyanoacrylate fuming methods. These new techniques do not require the application of a luminescent post-treatment in order to enhance cyanoacrylate-developed fingermarks. In this study, three one-step polymer cyanoacrylates: CN Yellow Crystals (Aneval Inc.), PolyCyano UV (Foster+Freeman Ltd.) and PECA Multiband (BVDA), and one monomer cyanoacrylate: Lumikit™ (Crime Scene Technology), were evaluated against a conventional two-step cyanoacrylate fuming method (Cyanobloom (Foster+Freeman Ltd.) with rhodamine 6G stain). The manufacturers' recommended conditions or conditions compatible with the MVC™ 1000/D (Foster+Freeman Ltd.) were assessed with fingermarks aged for up to 8 weeks on non-porous and semi-porous substrates. Under white light, Cyanobloom generally gave better development than the one-step treatments across the substrates. Similarly when viewed under the respective luminescent conditions, Cyanobloom with rhodamine 6G stain resulted in improved contrast against the one-step treatments except on polystyrene, where PolyCyano UV and PECA Multiband gave better visualisation. Rhodamine 6G post-treatment of one-step samples did not significantly enhance the contrast of any of the one-step treatments against Cyanobloom/rhodamine 6G-treated samples.
Centre for Forensic Science, University of Technology Sydney (UTS), P.O. Box 123, Broadway, NSW 2007, Australia. Electronic address: alicia.khuu@uts.edu.au.
Alicia
A
Khuu
Centre for Forensic Science, University of Technology Sydney (UTS), P.O. Box 123, Broadway, NSW 2007, Australia.
Scott
S
Chadwick
Centre for Forensic Science, University of Technology Sydney (UTS), P.O. Box 123, Broadway, NSW 2007, Australia.
Xanthe
X
Spindler
Centre for Forensic Science, University of Technology Sydney (UTS), P.O. Box 123, Broadway, NSW 2007, Australia.
Rolanda
R
Lam
Centre for Forensic Science, University of Technology Sydney (UTS), P.O. Box 123, Broadway, NSW 2007, Australia.
Sébastien
S
Moret
Centre for Forensic Science, University of Technology Sydney (UTS), P.O. Box 123, Broadway, NSW 2007, Australia.
Claude
C
Roux
D003487:Cyanoacrylates / Q000737:chemistry; D003878:Dermatoglyphics; D005260:Female; D005456:Fluorescent Dyes; D005554:Forensic Medicine / Q000379:methods; D006801:Humans; D049449:Luminescence; D008297:Male; D012235:Rhodamines; D014835:Volatilization
D003487:Cyanoacrylates; D005456:Fluorescent Dyes; D012235:Rhodamines; C026188:rhodamine 6G
CN Yellow Crystals; Cyanobloom UV; Latent fingermarks; Lumikit™; PECA Multiband; PolyCyano UV