为射击残留物检测提供了一个快速、 简便、 准确的无损检测方法, 通过激光显微拉曼光谱技术对弹药中的发射药及射击残留物中的有机颗粒进行了研究。 研究发现, 检测射击残留物有机颗粒获得最优拉曼信号的激发波长为473 nm, 可有效避开荧光干扰。 射击残留物有机颗粒主要来自部分燃烧的发射药颗粒, 拉曼光谱证明其主要成分与发射药主要成分基本一致, 但部分拉曼谱峰强度降低、 消失或是线宽变宽, 证明其物质结构也在一定程度上受到了破坏。 通过微观形态观察, 射击残留物有机颗粒表面以铜黄色、 灰黑色为主, 表面分布熔坑及附着带有金属光泽的球形无机颗粒, 这些特有形貌可视为射击残留物的典型特征, 成为射击残留物的重要判据。

A rapid approach for the nondestructive, accurate detection of organic gunshot residue was investigated. Raman microscopy was used to identify organic gunshot residue and the propellant in ammunition. The optimal excitation wavelength for the detection of organic particles using Raman spectroscopy was 473 nm. The Raman spectra of organic gunshot residue obtained using 473 nm laser excitation can effectively avoid the interference of fluorescence. The results demonstrated that the organic particles were mainly from the partially burned propellant particles. Meanwhile it was proved that the main component was basically consistent with the propellant except somehow damage in chemical structure or degree of crystallization with Raman spectra. The surface color of organic particles was mainly brassiness, dark gray. A lot of craters were distributed on the surface of organic particles. Spherical inorganic particles with metallic luster attached to the surface of organic particles can be regarded as the typical characteristics of gunshot residue.