Evaluation of the fingermark reagent oil red O as a possible replacement for physical developer

Salama, J; Aumeer-Donovan, S; Lennard, C; Roux, C

Evaluation of the fingermark reagent oil red O as a possible replacement for physical developer

Salama, J Aumeer-Donovan, S Lennard, C Roux, C

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Publication Type:: Journal Article
Citation:: Journal of Forensic Identification, 2008, 58 (2), pp. 203 - 237
Issue Date:: 2008-03-01

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Field	Value	Language
dc.contributor.author	Salama, J	en_US
dc.contributor.author	Aumeer-Donovan, S	en_US
dc.contributor.author	Lennard, C	en_US
dc.contributor.author	Roux, C https://orcid.org/0000-0003-3610-420X	en_US
dc.date.issued	2008-03-01	en_US
dc.identifier.citation	Journal of Forensic Identification, 2008, 58 (2), pp. 203 - 237	en_US
dc.identifier.issn	0895-173X	en_US
dc.identifier.uri	http://hdl.handle.net/10453/8474
dc.description.abstract	This study further evaluates a relatively new fingermark reagent, Oil Red O (ORO), for its potential to be used as a replacement for, or in sequence with, physical developer (PD). A preliminary evaluation of the existing ORO reagent on a number of different porous substrates produced fingermarks with excellent ridge detail and contrast. Attempts were made to reformulate the ORO reagent to improve its application. During these trials, sodium hydroxide was found to be an essential component of the reagent. None of the reformulated ORO reagents developed fingermarks as well as the existing ORO formulation. A comparison of fingermarks developed with ORO and PD on a variety of different porous surfaces indicated that ORO performance appeared to be compromised to a greater extent than PD by the age of the fingermark and the immersion time in water. ORO produced inferior results to PD on fingermarks older than approximately 4 weeks. ORO produced good-quality fingermarks when placed in sequence with PD and HFE-7100/HFC-4310mee formulations of DFO, ninhydrin (followed by secondary metal salt treatment with zinc), and 1,2-indandione-zinc. Selectivity studies revealed that ORO interacts with a wide variety of both water-soluble and water-insoluble compounds that may be present in latent fingermark deposits.	en_US
dc.relation.ispartof	Journal of Forensic Identification	en_US
dc.subject.classification	Legal & Forensic Medicine	en_US
dc.title	Evaluation of the fingermark reagent oil red O as a possible replacement for physical developer	en_US
dc.type	Journal Article
utslib.citation.volume	2	en_US
utslib.citation.volume	58	en_US
utslib.for	0399 Other Chemical Sciences	en_US
utslib.for	0699 Other Biological Sciences	en_US
utslib.for	1801 Law	en_US
pubs.embargo.period	Not known	en_US
pubs.organisational-group	/University of Technology Sydney
pubs.organisational-group	/University of Technology Sydney/Faculty of Science
pubs.organisational-group	/University of Technology Sydney/Faculty of Science/School of Mathematical and Physical Sciences
pubs.organisational-group	/University of Technology Sydney/Strength - CFS - Centre for Forensic Science
utslib.copyright.status	closed_access
pubs.issue	2	en_US
pubs.publication-status	Published	en_US
pubs.volume	58	en_US

Abstract:

This study further evaluates a relatively new fingermark reagent, Oil Red O (ORO), for its potential to be used as a replacement for, or in sequence with, physical developer (PD). A preliminary evaluation of the existing ORO reagent on a number of different porous substrates produced fingermarks with excellent ridge detail and contrast. Attempts were made to reformulate the ORO reagent to improve its application. During these trials, sodium hydroxide was found to be an essential component of the reagent. None of the reformulated ORO reagents developed fingermarks as well as the existing ORO formulation. A comparison of fingermarks developed with ORO and PD on a variety of different porous surfaces indicated that ORO performance appeared to be compromised to a greater extent than PD by the age of the fingermark and the immersion time in water. ORO produced inferior results to PD on fingermarks older than approximately 4 weeks. ORO produced good-quality fingermarks when placed in sequence with PD and HFE-7100/HFC-4310mee formulations of DFO, ninhydrin (followed by secondary metal salt treatment with zinc), and 1,2-indandione-zinc. Selectivity studies revealed that ORO interacts with a wide variety of both water-soluble and water-insoluble compounds that may be present in latent fingermark deposits.

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http://hdl.handle.net/10453/8474