Urban tree bark analysis for monitoring of air pollution level in Jakarta business district

Abstract Jakarta has become one of the cities with highest air pollution levels among emerging countries. In urban areas such as Jakarta, trees on roadside have potential for biomonitoring due to significant pollutants sourced from traffic. The bark provides information about its furrowed surface and collects atmospheric particle matter (PM). Therefore, structure 20 rain ( Samanea saman (Jacq.) Merr.) in four lots at Sudirman Central Business District (SCBD) were assessed. study aimed evaluate condition SCBD area based analysis concentrations important pollutant elements Pb (plumbum), Cd (cadmium), Cu (cuprum), Cr (chromium), Mn (manganese), Zn (zinc) bark. results showed thickness ranges 3-9 mm an average 6.13 mm. cuticula was gray-black color, phloem brownish, cambium layer very thin. Cu, Cr, Mn, detected elements. However, not found all these lots. Furthermore, is dominant trees, more than 40 ppm or 69% total, followed by Zn, Cr. Based result, through accumulated be used areas.