枪击残留物的X射线微区分析

When a gun is fired, in addition to the bullet many other materials exist the brarrel of the weapon, and are collectively termed gun shot residue(GSR). GSR is mainly comprized of gunpowder particles, and carbonaceous soot),ignition primer(typically calcium,lead, barium and antimony complexes),and metals(from the cartridge case, bullet coating and metal jacket-often containing brass or lead, somtimes with nickel coatings, and lead or antimony from the bullet core)
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