使用水溶性纤维和盐提取纯化交通事故微量物证的方法研究  

作　　者：赵冬 高岩 

机构地区：[1]公安部交通管理科学研究所道路交通安全公安部重点实验室

出　　处：《道路交通科学技术》2021年第4期47-51,共5页Road Traffic Science & Technology

基　　金：公安部科技强警基础工作专项(2019GABJC25)。

摘　　要：现场微量物证的采集是法庭科学工作的重要环节,目前在实践中除了刀片刮取等常规方法外,还没有更有效的方法来采集附着式微量物证。本研究介绍了一种使用水溶性棉签与盐相结合的微量物证提取纯化新方法,采用水溶棉签擦拭、加水溶解纤维、加盐调节密度三个步骤,成功实现附着式微量物证从载体的分离到杂质的去除。为进一步说明该方法的先进性,讨论了关键材料选择和方法原理。该方法被证明简单、快速、高效、可靠,在微量物证的采集、保存和纯化等方面具有应用前景。The collection of trace evidence on the spot is a paramount step in forensic science.At present,in practice,apart from conventional methods such as blade scraping,there are no more effective method to collect the attached trace evidence.This study introduces a new method for the collection and purification of the trace evidence using a combination of water-soluble cotton swabs and salt.The three steps of wiping with water-soluble cotton swabs,adding water to dissolve the fibers and adding salt to adjust the density have successfully achieved the separation of the attached trace evidence from the carriers and the removal of impurities.To further illustrate the advanced nature of the method,the selection of the key materials and the principle of the method are discussed.The method has been proved to be simple,fast,efficient and reliable,and has promising application prospects in the collection,preservation and purification of the trace evidence.

关 键 词：微量物证 提取 纯化 交通事故 水溶性纤维 

分 类 号：D91[政治法律—法学]