| The effect of zinc chloride, humidity and the substrate on the reaction of 1,2-indanedione-zinc with amino acids in latent fingermark secretions. | |
| | |
MedLine Citation:
|
PMID: 21726967 Owner: NLM Status: Publisher |
Abstract/OtherAbstract:
|
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 (Joullié's Pink). |
| | |
Authors:
|
Xanthe Spindler; Ronald Shimmon; Claude Roux; Chris Lennard |
Related Documents
:
|
11692217 - Influence of n-acetylcysteine on hepatic amino acid metabolism in patients undergoing o... 699337 - Isoelectric focusing of acid hydrolases in human liver and serum. findings in sera from... 807237 - Comparison of 12alpha-hydroxylation of oxygenated 5alpha-cholestanes and allochenodeoxy... 16762007 - Fenofibrate, a peroxisome proliferator-activated receptor alpha agonist, reduces hepati... 7778777 - Enzymatic synthesis of guanine nucleotides labeled with 15n at the 2-amino group of the... 3920727 - Stimulation of calcium uptake in rat calvaria by prostacyclin. |
Publication Detail:
|
Type: JOURNAL ARTICLE Date: 2011-7-2 |
Journal Detail:
|
Title: Forensic science international Volume: - ISSN: 1872-6283 ISO Abbreviation: - Publication Date: 2011 Jul |
Date Detail:
|
Created Date: 2011-7-5 Completed Date: - Revised Date: - |
Medline Journal Info:
|
Nlm Unique ID: 7902034 Medline TA: Forensic Sci Int Country: - |
Other Details:
|
Languages: ENG Pagination: - Citation Subset: - |
Copyright Information:
|
Copyright © 2011 Elsevier Ireland Ltd. All rights reserved. |
Affiliation:
|
Centre for Forensic Science, University of Technology, Sydney, Ultimo, NSW, Australia; National Centre for Forensic Studies, University of Canberra, Canberra, ACT, Australia 2601. |
Export Citation:
|
APA/MLA Format Download EndNote Download BibTex |
| MeSH Terms | |
Descriptor/Qualifier:
|
|
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
Previous Document: Development of a bead-based multiplex PCR assay for the simultaneous detection of multiple Mycoplasm...
Next Document: A complete passive blind image copy-move forensics scheme based on compound statistics features.