Volume 23, Issue 4 (October 1978)
Trace Element Profiles and Ratios Determined by Instrumental Neutron Activation Analysis for Fine Paper Identification
Instrumental neutron activation analysis (INAA) has been applied to virtually every type of evidentiary material for forensic purposes, including glass, rubber, narcotics, soil, and paper [1–5]. Literature to date on sample identification of fine paper (book or bond-type writing papers) by INAA has not emphasized the value of trace element concentration profiles or elemental ratios. It is to this area of sample identification that this investigation was directed. Some assets of INAA that make it suitable for forensic analysis are (1) the often nondestructive nature of the technique, which is valuable in many legal situations; (2) extremely high sensitivity, allowing small samples of evidentiary material to be used when mutilation is permitted; and (3) the ability to analyze for many elements in a single sample.