Berk Robert E
Illinois State Police Forensic Science Center at Chicago, Chicago, IL 60608-1248, USA.
J Forensic Sci. 2009 Jan;54(1):69-76. doi: 10.1111/j.1556-4029.2008.00919.x. Epub 2008 Nov 21.
Automated scanning electron microscopy with energy dispersive spectroscopy has been used to analyze airbag residue particles. Analysis of airbag residue from some passenger side airbags revealed some residue particles which are consistent with gunshot residue (GSR) samples. The source of these particles was determined to be percussion primers used to initiate the chemical reaction for deployment. This article identifies some vehicles which contain this type of airbag and demonstrates the types of particles which could be misidentified as being GSR. The low numbers of GSR particles in among the large particle populations of zirconium and/or copper-cobalt particles, which are clearly airbag residue, allow the trained analysts to distinguish the correct source of this residue. Particles containing high aluminum levels, elevated levels of allowable elements in GSR particles, or the presence of elements that are rare in GSR particles stand out as indications that the particles are not GSR in origin. This study serves as a guide to analysts who perform particle analysis in forensic investigations.
利用带有能谱仪的自动扫描电子显微镜对安全气囊残留颗粒进行了分析。对一些副驾驶侧安全气囊的残留分析显示，部分残留颗粒与枪击残留物（GSR）样本相符。经确定，这些颗粒的来源是用于引发安全气囊展开化学反应的火帽。本文识别出了一些配备此类安全气囊的车辆，并展示了可能被误认作GSR的颗粒类型。在大量明显为安全气囊残留的锆和/或铜钴颗粒中，GSR颗粒数量较少，这使得训练有素的分析人员能够辨别出该残留的正确来源。含有高铝水平、GSR颗粒中允许存在的元素水平升高，或者存在GSR颗粒中罕见元素的颗粒，都表明这些颗粒并非源自GSR。这项研究为法医调查中进行颗粒分析的分析人员提供了指导。
