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Neutron Activation Analysis for the Detection of Firearm Discharge Residues Collected on Cotton Swabs
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1973
Year
Gunshot ResidueForensics AnalysisEngineeringRadiation DetectionNuclear SecurityForensic ToxicologyNeutron Activation AnalysisPolice InvestigatorsNeutron SourceForensic AnalysisAnalytical ChemistryForensic ChemistryNuclear MaterialsGunshot Residue AnalysisFirearm ResiduesCrime Scene TraceNeutron ScatteringCotton Swabs
Abstract Cotton swabs moistened with 5% HNO3 are frequently used by police investigators to process a suspect’s hands for the presence of gunshot residue. A neutron activation analysis procedure is described for testing these swabs for barium and antimony, which are commonly found in firearm residues. The limitations of the method are also discussed.