Abstract In the present work the variability of the structure and chemical composition of the paint coating were investigated using FT-IR and Raman spectroscopies. Paint samples were collected from 30 car bodies from both metal and plastic parts of each car. The morphological characteristics of all samples were also analysed. It was found that in many cases the composition of the paint coating in various places differed significantly, in spite of the same final colour of the coating. The obtained information on the variation of the chemical contents within a car body has provided great support in the process of evaluation of analytical findings in real forensic cases.

中文翻译：

---

用傅立叶变换红外光谱和拉曼光谱检查车身内油漆化学成分和结构的变化

摘要 在目前的工作中，使用 FT-IR 和拉曼光谱研究了油漆涂层的结构和化学成分的可变性。从每辆汽车的金属和塑料部件的 30 个车身中收集油漆样品。还分析了所有样品的形态特征。发现在许多情况下，尽管涂层的最终颜色相同，但不同位置的油漆涂层的成分有显着差异。获得的车身内化学成分变化信息为实际法医案件分析结果的评估过程提供了极大的支持。