A preliminary study to evaluate the use of neutron activation analysis for the characterization of six groups of man-made
fibers for forensic purposes has been made. A total of 81 samples of acetate, acrylic, modacrylic, nylon, polyester and rayon
were analyzed. Small samples, approximately the size typically found during a crime scene search, were analyzed using a Ge(Li)
detector system following a 20 min irradiation at a flux of 5·1013 n·cm−2·sec−1. The following elements were determined quantitatively in one or more of the samples: Ti, Sr, Au, Zn, Sb, Br. Mn, Mg, Cu,
In, Co, Cu, V, K, Al, Cl, Na, Ca, and S. Significant qualitative and quantitative differences were found both between and
within the six groups. However, within certain groups some fibers from different manufacturers showed marked similarities
in qualitative and quantitative composition.