There has been increasing interest regarding air pollution in the Serpong area of Indonesia, a region near Jakarta, especially with respect to high concentrations of Pb detected in early 2001. Several studies have been conducted, but the appropriate action needed to control this pollution has not been identified because of inadequate identification of
the particulate matter sources. In this study, source investigation was performed using the chemical characteristics of ambient airborne particulate matter samples from several locations in Serpong and its surroundings.