为实现现场残留手帕纸塑料包装袋的检验区分,利用拉曼光谱法对35个不同品牌、不同系列、不同颜色的样本进行检验,依据拉曼光谱的差异,基于欧氏距离结合K均值聚类法,可将手帕纸塑料包装袋样本加以区分,同时考察了该法的重现性及分类可靠性。该检测分类方法不破坏检材,重现性好,分类客观性强,容错率高。为后续快速检验区分现场提取到的污染易损残片提供了理论依据。

To study the classification of on-site residual handkerchief paper plastic packaging bags,35 samples of different brands,different series and different colors were tested by Raman spectroscopy.According to the absorption peaks in Raman spectra,combined with K-means clustering method,different types of handkerchief paper plastic bag samples can be distinguished after the use of smooth function and similarity discrimination.The reproducibility and minimum detection amount are also investigated.These methods can protect the samples and has good reproducibility.Their objectivity is strong and they have low environment requirement.The paper provides a theoretical basis for the subsequent inspection to distinguish the contaminated and vulnerable fragments extracted.