Indian Journal of Society and Politics

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Detection of Gun Shot Residues on the Swab Taken from Hands of a Shooter by Neutron Activation Analysis


Affiliations
1 Forensic Science Laboratory, Field Unit, Lucknow, Uttar Pradesh, India
 

Using a swabbing technique, attempts have been made to detect firearm discharge residues on the hand of a shooter via the elements NO2, Pb, Sb,Ba and Cu. Pb was quantitated by AA (Atomic Absorption Analysis Technique) and the rest of elements by NAA (Neutron Activation Analysis Technique) . Two variations of the swabbing technique have been tried which shown that the one involving the use of different swabs for different areas on the firing hand is superior to the other involving the use of a single swab for the entire area. Further work to improve the swabbing procedure is in progress.

Keywords

Swab, Shooter, Neutron.
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  • Jauhari, M., Singh, T. and Chatterji, S.M. (1982): Primer residue analysis of ammunition of Indian origin, Forens.Sc. Int. 19,p253-258

  • Guinn, V.P. (1967): The determination of traces of barium and Antimony in gunshot residues in activation analysis, Published in the proceedings of the 1st International Conference on Forensic Activation Analysis,California Gulf general Atomic, Inc p161-173

  • Jauhari,M., Rao, M.S., Chattopadhyay, N., Chatterji, S.M.and Sen., A. (1983) : Shooter Identification: Element analysis of swabbing materials by Neutron Activation Analysis ( NAA) and Anodic Stripping Voltammetry ( ASV ), International Meeting Of the International Association of Forensic Science, Oxford .


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  • Detection of Gun Shot Residues on the Swab Taken from Hands of a Shooter by Neutron Activation Analysis

Abstract Views: 134  |  PDF Views: 3

Authors

Ajay Kumar Srivastava
Forensic Science Laboratory, Field Unit, Lucknow, Uttar Pradesh, India

Abstract


Using a swabbing technique, attempts have been made to detect firearm discharge residues on the hand of a shooter via the elements NO2, Pb, Sb,Ba and Cu. Pb was quantitated by AA (Atomic Absorption Analysis Technique) and the rest of elements by NAA (Neutron Activation Analysis Technique) . Two variations of the swabbing technique have been tried which shown that the one involving the use of different swabs for different areas on the firing hand is superior to the other involving the use of a single swab for the entire area. Further work to improve the swabbing procedure is in progress.

Keywords


Swab, Shooter, Neutron.

References