The effect of mark enhancement techniques on the subsequent detection of saliva

McAllister, Patricia, Graham, Eleanor, Deacon, Paul and Farrugia, Kevin (2016) The effect of mark enhancement techniques on the subsequent detection of saliva. Science & Justice, 56 (5). pp. 305-320. ISSN 1355-0306

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Abstract

There appears to be a limited but growing body of research on the sequential analysis/treatment of multiple types of evidence. The development of an integrated forensic approach is necessary to maximise evidence recovery and to ensure that a particular treatment is not detrimental to other types of evidence. This study aims to assess the effect of latent and blood mark enhancement techniques (e.g. fluorescence, ninhydrin, acid violet 17, black iron-oxide powder suspension) on the subsequent detection of saliva.

This study aims to contribute to a strategy for maximising evidence recovery and efficiency for the detection of latent marks and saliva. The results demonstrate that most of the enhancement techniques employed in this study were not detrimental to the subsequent detection of saliva by means of presumptive, confirmative and DNA tests.

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