Journal Published Online: 01 July 2003
Volume 48, Issue 4

ENFSI Proficiency Test Program on Identification of GSR by SEM/EDX

CODEN: JFSCAS

Abstract

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.

Author Information

Niewoehner, L
Science Institute of the Bundeskriminalamt, Wiesbaden, Germany
Wenz, HW
Science Institute of the Bundeskriminalamt, Wiesbaden, Germany
Andrasko, J
National Laboratory of Forensic Science, Linkoeping, Sweden
Beijer, R
Netherlands Forensic Institute, GD Rijswijk, The Netherlands
Gunaratnam, L
National Bureau of Investigation, Vantaa, Finland
Pages: 7
Price: $25.00
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Stock #: JFS2002396
ISSN: 0022-1198
DOI: 10.1520/JFS2002396