Investigations into the Influence of Donor Traits on the Performance of Fingermark Development Reagents. Part 1: 1,2-Indanedione-Zinc Chloride

This study outlines the use of 1,2-indanedione/zinc chloride (IND/ZnCl2) to treat fingermarks with a view to observing possible trends that may be present in a donor population. Fingermark samples from 131 donors were treated and subsequently evaluated using the grading scale devised by the Home Off...

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Main Authors: Fritz, P., Frick, A., van Bronswijk, W., Beaudoin, A., Bleay, S., Lennard, C., Lewis, Simon
Format: Journal Article
Published: International Association for Identification 2017
Online Access:http://hdl.handle.net/20.500.11937/57859
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author Fritz, P.
Frick, A.
van Bronswijk, W.
Beaudoin, A.
Bleay, S.
Lennard, C.
Lewis, Simon
author_facet Fritz, P.
Frick, A.
van Bronswijk, W.
Beaudoin, A.
Bleay, S.
Lennard, C.
Lewis, Simon
author_sort Fritz, P.
building Curtin Institutional Repository
collection Online Access
description This study outlines the use of 1,2-indanedione/zinc chloride (IND/ZnCl2) to treat fingermarks with a view to observing possible trends that may be present in a donor population. Fingermark samples from 131 donors were treated and subsequently evaluated using the grading scale devised by the Home Office Police Scientific Development Branch (now the Centre for Applied Science and Technology; CAST), UK. Out of a total of 1310 grades assigned, only 6 (0.5 %) returned a score of 0 and 64.6 % of all grades assigned were a 3 or 4. These tests indicated that grades for fingermarks developed within 3 days vary significantly depending on the age of the donor and the washing of hands prior to deposition. Donors who did not wash their hands the hour prior to deposition, or were below the age of 25, were more likely to offer higher grades. With fresh fingermarks, no significant variation in fingermark grades was observed that could be associated with food consumption, sex of the donor or recent use of cosmetics. The results for the treated 1 month old fingermarks agreed with the findings for fresh fingermarks, with the exception of washing of hands. In this case no significant difference was found between samples where donors had and had not washed their hands prior to deposition.
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publishDate 2017
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spelling curtin-20.500.11937-578592017-11-20T08:49:18Z Investigations into the Influence of Donor Traits on the Performance of Fingermark Development Reagents. Part 1: 1,2-Indanedione-Zinc Chloride Fritz, P. Frick, A. van Bronswijk, W. Beaudoin, A. Bleay, S. Lennard, C. Lewis, Simon This study outlines the use of 1,2-indanedione/zinc chloride (IND/ZnCl2) to treat fingermarks with a view to observing possible trends that may be present in a donor population. Fingermark samples from 131 donors were treated and subsequently evaluated using the grading scale devised by the Home Office Police Scientific Development Branch (now the Centre for Applied Science and Technology; CAST), UK. Out of a total of 1310 grades assigned, only 6 (0.5 %) returned a score of 0 and 64.6 % of all grades assigned were a 3 or 4. These tests indicated that grades for fingermarks developed within 3 days vary significantly depending on the age of the donor and the washing of hands prior to deposition. Donors who did not wash their hands the hour prior to deposition, or were below the age of 25, were more likely to offer higher grades. With fresh fingermarks, no significant variation in fingermark grades was observed that could be associated with food consumption, sex of the donor or recent use of cosmetics. The results for the treated 1 month old fingermarks agreed with the findings for fresh fingermarks, with the exception of washing of hands. In this case no significant difference was found between samples where donors had and had not washed their hands prior to deposition. 2017 Journal Article http://hdl.handle.net/20.500.11937/57859 International Association for Identification restricted
spellingShingle Fritz, P.
Frick, A.
van Bronswijk, W.
Beaudoin, A.
Bleay, S.
Lennard, C.
Lewis, Simon
Investigations into the Influence of Donor Traits on the Performance of Fingermark Development Reagents. Part 1: 1,2-Indanedione-Zinc Chloride
title Investigations into the Influence of Donor Traits on the Performance of Fingermark Development Reagents. Part 1: 1,2-Indanedione-Zinc Chloride
title_full Investigations into the Influence of Donor Traits on the Performance of Fingermark Development Reagents. Part 1: 1,2-Indanedione-Zinc Chloride
title_fullStr Investigations into the Influence of Donor Traits on the Performance of Fingermark Development Reagents. Part 1: 1,2-Indanedione-Zinc Chloride
title_full_unstemmed Investigations into the Influence of Donor Traits on the Performance of Fingermark Development Reagents. Part 1: 1,2-Indanedione-Zinc Chloride
title_short Investigations into the Influence of Donor Traits on the Performance of Fingermark Development Reagents. Part 1: 1,2-Indanedione-Zinc Chloride
title_sort investigations into the influence of donor traits on the performance of fingermark development reagents. part 1: 1,2-indanedione-zinc chloride
url http://hdl.handle.net/20.500.11937/57859