油漆稀料燃烧残留物的薄层色谱分析

采用薄层色谱扫描分析技术对醇酸、硝基油漆稀料在不同载体下的燃烧残留物进行了研究。制备了不同载体上的油漆稀料燃烧残留物,并以三氯甲烷为萃取剂对残留物进行提取,得到分析样品;结果显示,不同成分的油漆稀料特征组分不同,而不同载体对特征组分Rf值影响不同;通过对油漆稀料燃烧残留物的薄层色谱扫描分析,可以帮助火灾调查人员准确、快速的判断火场中油漆稀料的存在,为鉴定油漆稀料放火火灾提供借鉴。

The TLC Analysis of Paint Thinner Combustion Residue

In this paper,TLC is used to analyze characteristic components of combustion residue of paint thinner,including alkyd oil paint and nitrocellulose oil paint in different carriers.The samples of paint thinner combustion residue in different carriers were obtained and then extracted by chloroform.The result shows that characteristic components are different in different paint thinner and Rf is different on the different carriers.TLC analyzing the paint thinner combustion residue can help fire investigators detect the existence of paint thinner,and offer some data to evaluation of incendiary fire caused by paint thinner.