The aim of this research was to enhance the use of nuclear analytical techniques for air pollution studies and to study the
feasibility of the use of instrumental neutron activation analysis (INAA) as a routine monitoring tool to reveal environmental
pollution sources. For the collection of air particulate samples, the Gent stacked filter unit, low volume sampler with Nucleopore
membrane filters were used. Trace elements in samples collected at two suburban residential sites, Taejon and Wonju city in
the Republic of Korea, were analyzed by INAA. Variations of the elemental concentrations were measured monthly and the enrichment
factors were calculated for the fine (<2 μm EAD) and coarse size (2–10 μm EAD) fractions. The analytical data were treated
statistically to estimate the relationship between the two variables, the concentrations of elements and the total suspended
particulate matter. The results were used to describe the emission source and their correlation.