Physical evidence in drug intelligence, Part 2: discrimination of packaging tapes by colour

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Show simple item record huttunen, J Doble, PA Dawson, M Roux, CP Robertson, J 2010-05-28T09:43:19Z 2008-01
dc.identifier.citation Australian Journal of Forensic Sciences, 2008, 40 (1), pp. 73 - 83
dc.identifier.issn 0045-0618
dc.identifier.other C1 en_US
dc.description.abstract The authors have considered routine exploitation of physical evidence from seized shipments of illicit drugs for intelligence purposes. Part 1 of this series addressed the identification of polymer type within the adhesive pf packaging tapes and raised important issues with regard to how data should be collated in a databse as a basis for reliable drug intelligence. this article expands onthis topic by addressingt eh sue of colour for achieving the same aim. By using a relatively simple instrumental technique to analyse opaque 'brown' packaging tapes, it was found that colour was an effective way to discriminate between different adhesive tape samples. However, unitial results showed that the analysis of colour in packaging tapes was more complex than assigning seminsubjective names to particular hues (e.g. light brown, greenm brown etc). Instead, samples in the population often differed only slightly from one another and hence proved difficult to categorise. Thus, a database or analyst must avoid using such 'discrete' labels and instead make use of 'continuous' numerical data. Here, CIELab chromaticity coordinates were used to define representative colour spaces for each tape sample and these were then compared to determine whether two such volumes intersected. This process would decide whether or not the sampes could be discriminated. While several sets of data were compared, further work needs to be carried out into the consistency of colour within single rolls of tape or batches of tape.
dc.publisher Taylor & Francis
dc.relation.isbasedon 10.1080/00450610802047598
dc.title Physical evidence in drug intelligence, Part 2: discrimination of packaging tapes by colour
dc.type Journal Article
dc.parent Australian Journal of Forensic Sciences
dc.journal.volume 1
dc.journal.volume 40
dc.journal.number 1 en_US
dc.publocation UK en_US
dc.identifier.startpage 73 en_US
dc.identifier.endpage 83 en_US SCI.Chemistry and Forensic Sciences en_US
dc.conference Verified OK en_US
dc.for 0399 Other Chemical Sciences
dc.personcode 910324
dc.personcode 010494
dc.personcode 960382
dc.percentage 100 en_US Other Chemical Sciences en_US
dc.classification.type FOR-08 en_US
dc.edition en_US
dc.custom en_US en_US
dc.location.activity en_US
dc.description.keywords drug intelligence, packaging tapes, colour
pubs.embargo.period Not known
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 Chemistry and Forensic Science
pubs.organisational-group /University of Technology Sydney/Strength - Forensic Science
utslib.copyright.status Closed Access 2015-04-15 12:17:09.805752+10
pubs.consider-herdc true
utslib.collection.history Closed (ID: 3)

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