Once upon a twine: The Donna Steele murder investigation and an improved methodology for the comparison of synthetic twine

IF 1.9 4区 医学 Q2 MEDICINE, LEGAL
Jasper R. Bowman , Sarah L. Cresswell , Tony Peter , James F. Carter
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引用次数: 0

Abstract

In 2017 Cooktown resident Donna Steele was murdered and the case remained unsolved for more than a year. The forensic evidence from the investigation included two lengths of synthetic twine and a new protocol for the comparison of twine was developed to enhance the potential value of any evidence. The method was developed using 23 samples of similar twine collected across Australia. Traditional methods of physical and microscopic comparisons and polymer analysis by infrared spectroscopy were retained. Micro-spectrophotometry was used as an objective assessment of colour and was able to identify five groupings within the background samples. Measurements of hydrogen and carbon stable isotopic composition provided further delineation of the background samples. Combining traditional methods with micro-spectrophotometry and stable isotope measurements, the two case samples were found to be distinct from the background population and were indistinguishable when compared to each other.

曾经在一个线:唐娜斯蒂尔谋杀调查和改进的方法比较合成线
2017年,库克镇居民唐娜·斯蒂尔被谋杀,此案一年多来一直悬而未决。调查的法医证据包括两种长度的合成麻绳,并制定了一种新的麻绳比较方案,以提高任何证据的潜在价值。该方法是使用在澳大利亚收集的23个类似麻绳样本开发的。保留了传统的物理和微观比较方法以及红外光谱聚合物分析方法。显微分光光度法被用作对颜色的客观评估,并能够在背景样品中识别出五组。氢和碳稳定同位素组成的测量进一步描绘了背景样品。将传统方法与显微分光光度法和稳定同位素测量相结合,发现这两个病例样本与背景种群不同,并且相互比较时无法区分。
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来源期刊
Science & Justice
Science & Justice 医学-病理学
CiteScore
4.20
自引率
15.80%
发文量
98
审稿时长
81 days
期刊介绍: Science & Justice provides a forum to promote communication and publication of original articles, reviews and correspondence on subjects that spark debates within the Forensic Science Community and the criminal justice sector. The journal provides a medium whereby all aspects of applying science to legal proceedings can be debated and progressed. Science & Justice is published six times a year, and will be of interest primarily to practising forensic scientists and their colleagues in related fields. It is chiefly concerned with the publication of formal scientific papers, in keeping with its international learned status, but will not accept any article describing experimentation on animals which does not meet strict ethical standards. Promote communication and informed debate within the Forensic Science Community and the criminal justice sector. To promote the publication of learned and original research findings from all areas of the forensic sciences and by so doing to advance the profession. To promote the publication of case based material by way of case reviews. To promote the publication of conference proceedings which are of interest to the forensic science community. To provide a medium whereby all aspects of applying science to legal proceedings can be debated and progressed. To appeal to all those with an interest in the forensic sciences.
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