Airborne particulate matter has been collected by a high volume and a Gent-type stacked filter unit (SFU) low volume sampler
during the 2000-2001 period. The high volume sampler used S&S cellulosic and the SFU two Nuclepore polycarbonate filters to
collect fine and coarse size fractions. The elemental analysis of the collected TSP, fine and coarse particles has been performed
using instrumental neutron activation analysis and atomic absorption spectrometry. Twenty-two trace elements on Nuclepore
and twenty-four elements on S&S filters have been measured. The collected data have been compared with the previous data of
Tehran air and with other cities in the world.