血痕预试验试剂显现火场中血痕的研究进展

Application Progress of Bloodstain Presumptive Test Reagents to Detect Bloodstains at Fire Scenes

血液痕迹是犯罪现场最重要的物证之一,既具生物学特性,又具有痕迹学特性,可以为案件侦查提供重要线索和有力证据。涉火案件现场的血痕受高温、水渍及烟尘覆盖等多种因素的影响,具有高度破坏性和复杂性。重点介绍了血痕预试验常用试剂,综述了国内外近年来血痕预试验试剂应用于显现火场环境中血痕的研究情况,以及可增强预试验试剂的发光强度及显色效果的烟尘去除技术。希望能为涉火案件的实际勘查工作及相关研究提供一定的参考,并为分析化学学科教育提出一种新方向。

Blood trace is one of the most important physical evidence at the crime scene,which has both biological and trace ological characteristics,and can provide important clues and powerful evidence for case investigation.The bloodstains at the scene of fire-related cases are affected by various factors such as high temperature,water stains,and soot coverage,and are highly destructive and complex.This article focuses on the bloodstain presumptive test reagents and reviews the research on applying these reagents to visualize bloodstains in fire scene environments.It also explores the luminescence intensity of the enhancement of presumptive test reagents and the soot removal technologies of color visualization.It is hoped that it can provide a certain reference for the crime scene investigation and related research of fire-related cases,and put forward a new direction for the education of analytical chemistry.