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NCJRS Abstract

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NCJ Number: 81500 Find in a Library
Title: Analysis of Long-Range Bullet Entrance Holes by Atomic Absorption Spectrophotometry and Scanning Electron Microscopy
Journal: Journal of Forensic Sciences  Volume:27  Issue:1  Dated:(January 1982)  Pages:92-112
Author(s): M Ravreby
Date Published: 1982
Page Count: 21
Format: Article
Language: English
Country: United States of America
Annotation: Bullet residue and primer particles were analyzed by scanning electron microscopy with energy dispersive analysis (SEM-EDA) and by flame and flameless atomic absorption spectrophotometry (AAS).
Abstract: The residue and particles were on cloth targets around entrance holes produced by bullets fired at distances of 10 to 200 m. Primer particles and their chemical constituents were almost always detected by SEM-EDA around the holes produced by rifles and pistols fired at long ranges, and in many cases the barium and antimony associated with primer particles were detected by flameless AAS. Particles were also detected by SEM-EDA on the rear of bullets fired into and recovered from wooden blocks. Usually a hole caused by a bullet jacketed with gilding metal could be distinguished from one caused by a bullet jacketed with yellow brass alloy. Paint from bullet tips of military tracers was also detected. Analysis of the various residues around entrance holes provides a means for identifying the type of ammunition used. (Author abstract)
Index Term(s): Bullet hole identification
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