Rankin-Turner Stephanie, Turner Matthew A, Kelly Paul F, King Roberto S P, Reynolds James C
Department of Chemistry , Loughborough University , Loughborough , LE11 3TU , UK . Email:
Foster + Freeman Ltd , Vale Park, Evesham , Worcestershire WR11 1TD , UK.
Chem Sci. 2018 Nov 7;10(4):1064-1069. doi: 10.1039/c8sc04133d. eCollection 2019 Jan 28.
The ability to achieve rapid, identification 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 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 identification and age estimation of bodily fluids without the need for contaminative presumptive tests or time-consuming sample preparation.
能够快速鉴定和估计人类体液的年龄，可为犯罪调查提供有价值的信息。一种新型直接分析方法现在能够在犯罪现场对人类体液进行快速鉴定和年龄估计，用于法医分析。开发了一种热解吸表面采样探头，并与紧凑型质谱仪联用，可在两个月内及不同环境条件下直接分析人类体液的挥发性有机化合物（VOC）谱，无需事先进行样品制备。该方法不仅能够识别体液并区分常见干扰物种，还能在两个月的时间段内区分不同年龄的体液污渍。这表明无需进行污染性的初步测试或耗时的样品制备，就有可能快速鉴定和估计体液的年龄。
