刑事案件现场中塑料助剂的分离与检验

Separation and Test of Plastic Additives in Criminal Cases

塑料是法庭科学中常见的物证之一,在交通肇事、凶杀、盗窃、爆炸等各类刑事案件现场中,经常可以提取到各种塑料检材。塑料主要是由各种合成树脂和各种助剂组成。为了提供更可靠的鉴定结论,可根据检材的情况,对其助剂进行分离,分离后再采用色谱、光谱等方法进行检验,这样更有利于进行同一认定,可为公安检验工作提供实际帮助。

Plastic is one of the common physical evidences in forensic science.Various plastic inspection materials can often be extracted at the scene of various criminal cases,such as traffic accidents,homicides,thefts,explosions,etc.Plastic is mainly composed of various synthetic resins and additives.In order to provide a more reliable identification conclusion,the additives can be separated according to the situation of the inspection material,and then tested by chromatographic,spectroscopy and other methods after separation,which is more conducive to the same identification and can provide practical assistance for public security inspection work.