Department of Pathology, Karaganda Medical University, Karaganda, Kazakhstan, 60-59 Yermekova str., Karaganda, 100009, Kazakhstan.
Department of Informatics and Biostatistics, Karaganda Medical University, Karaganda, Kazakhstan, 54-33 Krylova str., Karaganda, 100019, Kazakhstan.
J Forensic Leg Med. 2021 Jul;81:102182. doi: 10.1016/j.jflm.2021.102182. Epub 2021 May 20.
Hair is one of the most common evidence types found in criminal investigations. Analysis of human hair reveals the mineral composition accumulated within it over time spent in a specific area, thereby providing additional information for forensic identification.
To identify patterns of the elemental composition of hair in territories with different natural and anthropogenic features, hair samples of 1238 residents and 217 corpses of Central Kazakhstan were studied. The determination of 14 chemical elements in hair by inductively coupled plasma atomic emission spectrometry were presented. The data were analysed in terms of place of residence, gender, age and condition.
The results showed that the concentration of trace elements like Cu, Fe, Cd, and As significantly differed among all regions (p < 0.05). The composition of hair samples obtained from women significantly differed from those obtained from men for certain major and trace elements (p < 0.05). Concentrations of Ca and Mg in men were significantly lower than in women (p < 0.05) and were decreasing with age (p < 0.05).
The present investigation revealed a relationship between the elemental composition of hair and the place of permanent residence of a person, formed under the influence of regional industrial complexes, and determining gender and age-related differences. These findings enhance the possibilities of forensic human identification.
毛发是刑事调查中最常见的证据类型之一。分析毛发中的矿物质组成，可以揭示其在特定区域内积累的时间，从而为法医鉴定提供更多信息。
为了确定具有不同自然和人为特征地区的毛发元素组成模式，研究了哈萨克斯坦中部 1238 名居民和 217 具尸体的毛发样本。采用电感耦合等离子体原子发射光谱法测定了毛发中的 14 种化学元素。根据居住地点、性别、年龄和状况对数据进行了分析。
结果表明，所有地区的微量元素（如 Cu、Fe、Cd 和 As）的浓度存在显著差异（p<0.05）。来自女性的毛发样本的组成与来自男性的样本在某些主要和微量元素方面存在显著差异（p<0.05）。男性体内的 Ca 和 Mg 浓度明显低于女性（p<0.05），且随年龄增长而降低（p<0.05）。
本研究揭示了毛发的元素组成与一个人常住地之间的关系，这种关系是在区域工业综合体的影响下形成的，决定了性别和年龄相关的差异。这些发现增强了法医鉴定的可能性。
