Journal
WILEY INTERDISCIPLINARY REVIEWS: FORENSIC SCIENCE
Volume 4, Issue 2, Pages -Publisher
WILEY
DOI: 10.1002/wfs2.1439
Keywords
forensic anthropology; human identification; isoscapes; stable isotope ratio analysis; taphonomy
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Stable isotope ratio analysis is an important tool for forensic investigators, helping to establish identities, reconstruct geolocational history, and separate remains in cases. This article discusses the definition and sources of stable isotopes, the selection of appropriate human tissue samples, and sample preparation, analysis, and data handling methods.
Stable isotope ratio analysis is becoming an extremely important tool for the forensic investigator. It can be particularly useful in missing persons investigations to help establish an unknown's identity by potentially reconstructing an individual's geolocational history, determining the number of individuals present in a case, and linking/separating remains from commingled assemblages. In this review article, we explore several main themes related to the use of stable isotopes in postconflict forensic identification. First, we describe what stable isotopes are and how global isotopic variation arises in human tissues via natural processes and cultural practices. Next, we discuss the selection of appropriate human tissue samples for examination based on testable hypotheses. We provide guidance on the options that exist for isotope sample preparation, analysis, and data handling; and finally, we examine which sample quality measures and quality assurance approaches should be used in isotope data reporting and interpretation. These themes are primarily presented to help the isotope data consumer understand the benefits and limitations of the technique that might not be apparent when sending samples to and receiving results from a high throughput, contract isotope testing laboratory. Real world examples of forensic stable isotope ratio analysis are provided within the article to highlight many of the concepts, particularly in regard to identification applications This article is categorized under: Forensic Anthropology > Anthropology in Mass Disaster & War Crime Contexts Forensic Biology > Interpretation of Biological Evidence Forensic Chemistry and Trace Evidence > Emerging Technologies and Methods
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