Niewoehner L, Wenz H W, Andrasko J, Beijer R, Gunaratnam L
Forensic Science Institute of the Bundeskriminalamt, BKA, D-65173 Wiesbaden, Germany.
J Forensic Sci. 2003 Jul;48(4):786-93.
Within the framework of the ENFSI Expert Working Group "Firearms," a proficiency test on the detection and identification of GSR by SEM/EDX was organized and performed. The test material was designed by the Bundeskriminalamt and manufactured to order by an external company for SEM accessories. The participating laboratories were requested to determine the total number of PbSbBa-containing particles on the test samples following their own laboratory specific methods of automated GSR particle search and detection by SEM/EDX. Two similar samples with synthetic GSR particles were dispatched to all participants in order to gain additional information on systematic errors within the obtained results (split-level study), whereas one sample was supplied only with PbSbBa particles, and the second one was additionally contaminated with some environmental particles. This report summarizes the results of the study as well as a statistical evaluation and comparison with previous studies.
在欧洲法医科学研究所（ENFSI）“火器”专家工作组的框架内，组织并开展了一项关于通过扫描电子显微镜/能谱仪（SEM/EDX）检测和识别枪击残留物（GSR）的能力验证测试。测试材料由德国联邦刑事警察局设计，并由一家外部公司按订单生产用于SEM配件。要求参与实验室按照各自实验室特定的通过SEM/EDX自动搜索和检测GSR颗粒的方法，确定测试样品上含铅锑钡颗粒的总数。向所有参与者发送了两个含有合成GSR颗粒的类似样品，以便获取有关所得结果中系统误差的更多信息（分层研究），其中一个样品仅含有铅锑钡颗粒，第二个样品还被一些环境颗粒污染。本报告总结了该研究的结果以及统计评估，并与先前的研究进行了比较。
