摘要
目的 探究利用现场勘查遮光伞解决强光环境中对血痕进行鲁米诺检验时难以显现的问题。方法 选择红砖、土壤及黑布三种客体,制备滴加不同浓度血样及不同留存时间的检材,对同类检材分别在强光环境、强光环境中的遮光伞下及暗室内进行鲁米诺检验并拍照取证。结果 强光环境中经鲁米诺检验无法直接显现的血痕在遮光伞形成的暗环境中能达到较好的显现效果,并与暗室内的结果无明显差异。结论 利用现场勘查遮光伞在强光环境中形成相对暗环境,可简便快捷地进行血痕的鲁米诺检验,为及时在现场勘查中发现并提取血痕物证提供了有效途径。
Objective To investigate the use of crime scene investigation umbrellas to solve the problem that it is difficult to show the luminol test for bloodstains in strong light environment.Methods Three objects:red bricks,soil and black cloth were selected,samples with different concentrations of blood and different retention times were,prepared,luminol tests were performed on the same type of samples in a strong light environment,under the umbrella and in a dark room respectively,and photograghic evidence were obtained.Results It was found that bloodstains that could not be directly visualised by luminol test in the strong light environment could achieve better effects in the dark environment formed by the umbrella,and showed unsignificant difference from the results in the dark room.Conclusion Using the umbrella to create a relatively dark environment in strong daylight can easily and quickly perform the luminol test for bloodstains,providing an effective way to discover and extract blood stains in on-site investigations.
作者
刘兆
钱尊磊
丛维萱
Liu Zhao;Qian Zunlei;Cong Weixuan(School of Criminal Investigation,People’s Public Security University of China,Beijing 100038,China;Beijing Municipal Key Laboratory of Forensic Science,Beijing,100038)
出处
《中国法医学杂志》
CSCD
2024年第5期596-599,共4页
Chinese Journal of Forensic Medicine
基金
中国人民公安大学刑事科学技术双一流创新研究专项(2023SYL06)。
关键词
法庭科学
现场勘查
血痕
鲁米诺
现场勘查遮光伞
Forensic science
Crime scene investigation
Bloodstain
Luminol
Crime scene investigation umbrella
作者简介
刘兆,男,副教授,博士,主要从事法医病理、法医物证及法医毒物分析方面的研究,E-mail:liuzhao0610@163.com。
