The effect of zinc chloride, humidity and the substrate on the reaction of 1,2-indanedione-zinc with amino acids in latent fingermark secretions

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dc.contributor.author Spindler, Xanthe en_US
dc.contributor.author Shimmon, Ronald en_US
dc.contributor.author Roux, Claude en_US
dc.contributor.author Lennard, Christopher en_US
dc.contributor.editor en_US
dc.date.accessioned 2012-02-02T05:27:26Z
dc.date.available 2012-02-02T05:27:26Z
dc.date.issued 2011 en_US
dc.identifier 2010005516 en_US
dc.identifier.citation Spindler Xanthe et al. 2011, 'The effect of zinc chloride, humidity and the substrate on the reaction of 1,2-indanedione-zinc with amino acids in latent fingermark secretions', Elsevier Inc, vol. 212, no. 1-3, pp. 150-157. en_US
dc.identifier.issn 0379-0738 en_US
dc.identifier.other C1 en_US
dc.identifier.uri http://hdl.handle.net/10453/14646
dc.description.abstract Anecdotal evidence from forensic practitioners and studies conducted under controlled conditions have indicated that the reaction between 1,2-indanedione and the amino acids present in latent fingermark deposits is highly susceptible to ambient humidity. The addition of catalytic amounts of zinc chloride to the 1,2-indanedione working solution ? usually in the order of 1:25 to 1:4 molar ratio (indanedione:zinc) ? significantly improves the colour and luminescence of fingermarks treated under dry conditions but appears to have a negligible effect on fingermarks treated in humid environments. The results presented in this paper confirmed that zinc(II) ions added to the 1,2-indanedione working solution act as a Lewis acid catalyst, stabilising a key intermediate during a rate-limiting hydrolysis step. Furthermore, studying the reaction using a chromatography-grade cellulose substrate method previously reported confirmed that cellulose substrates play a major role in facilitating the indanedione-amino acid reaction by acting as a surface catalyst in the early stages of the reaction and by directing the formation of the desired luminescent product (Joullie' ?s Pink). en_US
dc.language en_US
dc.publisher Elsevier Inc en_US
dc.relation.isbasedon http://dx.doi.org/10.1016/j.forsciint.2011.06.005 en_US
dc.title The effect of zinc chloride, humidity and the substrate on the reaction of 1,2-indanedione-zinc with amino acids in latent fingermark secretions en_US
dc.parent Forensic Science International en_US
dc.journal.volume 212 en_US
dc.journal.number 1-3 en_US
dc.publocation Clare, Ireland en_US
dc.identifier.startpage 150 en_US
dc.identifier.endpage 157 en_US
dc.cauo.name SCI.Chemistry and Forensic Sciences en_US
dc.conference Verified OK en_US
dc.for 039902 en_US
dc.personcode 102605 en_US
dc.personcode 980366 en_US
dc.personcode 960382 en_US
dc.personcode 0000016451 en_US
dc.percentage 100 en_US
dc.classification.name Forensic Chemistry en_US
dc.classification.type FOR-08 en_US
dc.edition en_US
dc.custom en_US
dc.date.activity en_US
dc.location.activity en_US
dc.description.keywords Fingermarks, 1,2-indanedione, Indanedione?zinc, Amino acids, Joullie' ?s Pink en_US
dc.staffid 0000016451 en_US


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