Chemists distinguish between gunshot residue from various firearms

Analytical technique could lead to better crime scene investigation

By Rachel Ehrenberg, 16:23 PM April 5, 2012

As forensic evidence goes, gunshot residue can be full of holes. But a new technique could provide a more definitive link between suspect and gun. A tool that employs lasers may allow investigators to match residue alone to a specific caliber of firearm, scientists report in two recent papers in Analytical Chemistry

“Anything that’s going to enhance or expedite the detection of gunshot residue and provide stronger evidentiary value is a way forward,” says analytical chemist Jason Birkett...

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