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Raman microscopic identification of gunshot residues
Author(s) -
Stich Susanne,
Bard Delphine,
Gros Leo,
Walter Wenz H.,
Yarwood Jack,
Williams Ken
Publication year - 1998
Publication title -
journal of raman spectroscopy
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.748
H-Index - 110
eISSN - 1097-4555
pISSN - 0377-0486
DOI - 10.1002/(sici)1097-4555(199809)29:9<787::aid-jrs301>3.0.co;2-h
Subject(s) - raman spectroscopy , microcrystalline , orthorhombic crystal system , antimony , chemistry , crystal structure , barium , oxide , mineralogy , crystallography , inorganic chemistry , organic chemistry , optics , physics
Raman microscopy was used to identify unambiguously the anions of lead and barium in gunshot residues ( ca . 5 μm in size) deposited on cellulosic substrates. It was found that most of the particles consist of mixtures of oxides, sulphate and carbonate (along with carbon). In particular, there is strong evidence for the formation of mixed oxides of iron but only relatively little evidence for oxides of antimony. The Raman technique has been shown to be able to identify individual or mixed components and to confirm the presence of microcrystalline particles with a particular crystal structure (e.g. orthorhombic lead oxide). © 1998 John Wiley & Sons, Ltd.