稳定同位素检验推断生物物证供体的生活时空信息

发布时间：2018-03-14 22:21

本文选题：法庭科学　切入点：稳定同位素检验　出处：《刑事技术》2016年02期 　论文类型：期刊论文

【摘要】：稳定同位素(C、H、O、N等)的分布具有一定的地域特征性,这种地域特征性可以通过食物、水、空气等多种途径在人的身体组织,如指甲、头发、牙齿、骨骼等中体现出来。对生物物证供体的人体组织进行稳定同位素检验分析,可以推断其生活时空信息。本文以指甲作为研究对象,通过稳定同位素检验初步探讨了国内两个不同城市——四川达州和陕西咸阳两市常住居民指甲中C、H、O、N稳定同位素比值特征,并利用所建立的方法对达州一起案件中死者的指甲进行了分析,结合两个城市的实验数据推断了死者生前可能的生活地域信息,验证了稳定同位素检验在生物物证供体生活时空信息推断中应用的可行性。稳定同位素数据分析和信息推断需建立在稳定同位素数据库的基础之上,本文探讨了人体组织中稳定同位素分析在生物物证供体生活时空信息推断中的作用,揭示了建立全国性的固定区域常住居民指甲、头发、牙齿、骨骼中稳定同位素数据库的重要意义。同时,稳定同位素检验在暴恐分子生活时空信息调查、未知名尸体身源推断、重大事故受害者身份确认等领域也具有广阔应用前景。
[Abstract]:The distribution of stable isotopes (Con) has certain regional characteristics, which can be found in human body tissues, such as nails, hair, teeth, etc., through food, water, air, etc. Bones and so on. The biological evidence donor's human body tissue stability isotope examination analysis, may infer its life time and space information. This article regards the fingernail as the research object, By means of stable isotope test, the characteristics of stable isotopic ratios in fingernails of two different cities in China, Dazhou, Sichuan, and Xianyang, Shaanxi, have been preliminarily discussed. Using the established method to analyze the fingernails of the deceased in a case in Dazhou, and combining the experimental data of the two cities, we infer the possible living region information of the deceased before his death. The feasibility of applying stable isotope test to the estimation of temporal and spatial information of biological evidence donors is verified. The analysis and information inference of stable isotope data should be based on the stable isotope database. This paper discusses the role of stable isotopic analysis in human tissues in the estimation of temporal and spatial information on life of biological evidence donors, and reveals the establishment of a nationwide fixed area for permanent residents' nails, hair and teeth. At the same time, the stable isotope test has a broad application prospect in the fields of investigation of temporal and spatial information of violent terrorist molecules, inferences of unknown body sources, identification of victims of major accidents and so on.
【作者单位】：公安部物证鉴定中心;
【基金】：公安部物证鉴定中心基本科研业务费项目课题(No.2014JB006)
【分类号】：D919

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