Bulletin of the Geological Society of Malaysia, Volume 49, April 2004, pp. 57 – 60
Geology Program, School of Environment & Natural Resources Sciences, Faculty of Science & Technology, Universiti Kebangsaan Malaysia, 43600 Bangi, Selangor
Abstract: Heavy metals namely Cu, Cr, Ni, Zn, Pb, and Co in soil horizons beneath the Ampar Tenang municipal open-tipping site have been extensively investigated through examination of twenty one representative triplicate soil samples that were collected from nine auger holes distributed in three locations within the study area. These include upstream (ATU), downstream (ATD), and soilwaste interface (ATI). Results obtained for ATI revealed considerably higher concentration levels of most of the elements analyzed compared to ATD and ATU. Moreover, Cr, Zn and Pb had shown higher levels of concentration amongst all examined metals. It was found that in most cases, the heavy metal concentration was generally high at the surface and downwards up to 60 cm depth, then decreased relatively with increasing depth. It was shown that, in addition to the vertical infiltration of leachate from the solid waste, the hydrological regime of groundwater has also a strong impact on the contaminants distribution in soils below the site.