کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
97932 160516 2008 9 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
SEM/EDS analysis and characterization of gunshot residues from Brazilian lead-free ammunition
موضوعات مرتبط
مهندسی و علوم پایه شیمی شیمی آنالیزی یا شیمی تجزیه
پیش نمایش صفحه اول مقاله
SEM/EDS analysis and characterization of gunshot residues from Brazilian lead-free ammunition
چکیده انگلیسی

The exposition to heavy metal-rich airborne due to fire practicing has forced to the development of heavy metal-free environmental ammunition primers all over the world. Here we characterize the GSR elements present in the Brazilian lead-free ammunition produced by Companhia Brasileira de Cartuchos (CBC) and commercialized by MagTech in the U.S. and Europe under the name CleanRange® centerfire cartridges. Both first and second generations of CleanRange® in calibers 9 mm Luger, .40 S&W, .380 AUTO and .38 SPL were analyzed and compared to regular Brazilian CBC ammunition by scanning electron microscopy/energy dispersive spectroscopy. Differences in composition and morphology of GSR particles from the two generations of CleanRange® were observed. The first generation ammunition (found in Europe) presented spherical particles, being strontium the only unique element detected. The second generation (found in the U.S.) produced irregular particles composed mostly by potassium, aluminum, silicon and calcium. We can conclude that identification of GSR derived from CBC second generation lead-free ammunition in suspects’ hands may be impossible without the addition of a distinct metallic taggant in the primer composition by the manufacturer.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Forensic Science International - Volume 177, Issue 1, 2 May 2008, Pages e9–e17
نویسندگان
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