TY - JOUR PY - 1975// TI - Firearms discharge residue sample collection techniques JO - Journal of forensic sciences A1 - Goleb, J. A. A1 - Midkiff, C. R. SP - 701 EP - 707 VL - 20 IS - 4 N2 - Critical comparisons of Ba and Sb in firearms discharge residue were made on samples collected by three independent collection technqiues. Collection materials studied were transparent adhesive tape, (Scotch Brand), a solution of cellulose acetate in acetone ("Film Lift"), and plastic-shafted cotton swabs wetted with dilute nitric acid. Flameless atomic absorption analyses were performed with a Jarrell-Ash Model 810 instrument equipped with a tantalum strip atomizer. Tape and cotton swabs gave comparable positive indications of residue, with frequencies of 90 and 80%, respectively. The plastic Film Lift gave fewer positives, with a frequency of 50%. With the transparent tape lift, gunshot residue particles are discernible, making nondestructive microscopic identification possible prior to destructive elemental analysis.

Language: en

LA - en SN - 0022-1198 UR - http://dx.doi.org/ ID - ref1 ER -