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Transforming Presumptive Forensic Testing: In-situ Identification and Age Estimation of Human Bodily Fluids

Abstract

The ability to achieve rapid, in situ identifcation and age estimation of human bodily fluids can provide valuable information during the investigation of a crime. A novel direct analysis method now permits the rapid in situ identification and age estimation of human bodily fluids for forensic analysis at crime scenes. A thermal desorption surface sampling probe was developed and coupled with a compact mass spectrometer for the direct analysis of volatile organic compound (VOC) profiles of human bodily fluids within two months and in different environmental conditions, without the need for prior sample preparation. The method is not only capable of identifying bodily fluids and discriminating against common interferent species, but also differentiating between bodily fluid stains of different ages over a time period of two months. This demonstrates the potential for rapid in situ identification and age estimation of bodily fluids without the need for contaminative presumptive tests or time-consuming sample preparation.

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Publication details

The article was received on 17 Sep 2018, accepted on 06 Nov 2018 and first published on 07 Nov 2018


Article type: Edge Article
DOI: 10.1039/C8SC04133D
Citation: Chem. Sci., 2019, Accepted Manuscript
  • Open access: Creative Commons BY license
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    Transforming Presumptive Forensic Testing: In-situ Identification and Age Estimation of Human Bodily Fluids

    S. Rankin-Turner, M. A. Turner, P. F. Kelly, R. S. P. King and J. Reynolds, Chem. Sci., 2019, Accepted Manuscript , DOI: 10.1039/C8SC04133D

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