Problems of Forensic Sciences 2001 Vol. 46 (XLVI) 281-287
FREQUENCY OF OCCURRENCE OF CERTAIN CHEMICAL CLASSES OF GSR FROM VARIOUS AMMUNITION TYPES
Zuzanna BROŻEK-MUCHA1, Grzegorz ZADORA1,2
1Institute of Forensic Research, Cracow, Poland
2Faculty of Chemistry, Jagiellonian University, Cracow, Poland
Streszczenie
The subject of the presented study were thirteen samples of primer residues originating from six types of ammunition, collected from shooters’ hands immediately after shooting. The entire area of adhesive tabs with the secured material was examined with the use of SEM-EDX method in the automatic manner. Frequencies of occurrence of particles assigned to various chemical classes were calculated for each of the shooting experiment performed. In order to find out what kind of mutual relationships would reveal samples of gunshot residues collected from various types of ammunition as well as from the same type of ammunition cluster analysis was applied. The performed cluster analysis showed a promising tendency of grouping ammunitions according to their types. Moreover, it was checked that a sample of GSR from Makarov 9 mm ammunition, with some chemical classes weakly represented, may be correctly classified into the appropriate group of samples of GSR originating from this ammunition.
Słowa kluczowe
Gunshot residues (GSR); SEM-EDX automatic search; Frequency of occurrence of primer residues; Multivariate statistical methods; Cluster analysis.