Burnett B R
Meixa Tech, Cardiff, CA.
J Forensic Sci. 1991 Nov;36(6):1745-52.
A victim was shot in the head with a 9-mm Smith & Wesson pistol using Winchester Silvertip hollow-point ammunition. Of interest in this case was the distance from the muzzle of the weapon to the victim's head, since the wound characteristics were equivocal for firing distance. Two other handguns (revolvers) were involved in this shooting, in addition to a revolver owned by the victim. The handguns were sampled using tape lifts, and the casings were sampled by washing them in distilled water, followed by vacuum filtration of the washing water through 0.2-microns-pore Nuclepore filters. These materials were examined by scanning electron microscopy/energy-dispersive X-ray analysis. Calcium-phosphorous (bone) particles were detected on the 9-mm Smith & Wesson pistol, on two casings found at the scene, and on one of the revolvers. Two of the calcium-phosphorous particles on the casings had associated bullet fragments. Test shots on live pigs destined for slaughter showed that bone particles are a feature of backspatter from close-range shots to heads. Contamination of nearby surfaces by bone fragments and bone-plus-bullet fragments, as well as other organic debris, appears to be quite heavy.
一名受害者被一把使用温彻斯特银尖空心弹的9毫米史密斯威森手枪击中头部。在这个案件中，值得关注的是武器枪口到受害者头部的距离，因为伤口特征对于射击距离来说并不明确。除了受害者拥有的一把左轮手枪外，另外两把左轮手枪也与此次枪击事件有关。对手枪使用胶带提取样本，对弹壳则用蒸馏水清洗，然后将清洗水通过0.2微米孔径的核孔滤膜进行真空过滤来提取样本。这些材料通过扫描电子显微镜/能量色散X射线分析进行检查。在9毫米史密斯威森手枪、现场发现的两个弹壳以及其中一把左轮手枪上检测到了钙磷（骨骼）颗粒。弹壳上的两个钙磷颗粒伴有子弹碎片。对即将被屠宰的生猪进行的试射表明，骨骼颗粒是近距离头部射击产生的反向喷溅的一个特征。骨骼碎片、骨骼加子弹碎片以及其他有机碎片对附近表面的污染似乎相当严重。
