The distribution of heavy metal concentrations surrounding Temerloh municipal solid waste landfill area / Nur Emyraa Mohd Yusop

Solid wastes landfill is the source of pollution to the surrounding area by distribution of pollutant through wind. The wastes can be toxic when it contains heavy metal. The aim of this study are to investigate the presence of chromium (Cr), iron (Fe), lead (Pb) and zinc (Zn) near the Ulu Tualang landfill, to assess their concentration and to determine the contamination of heavy metals studied with contamination factors and their enrichment with enrichment factors. Soil sample were taken at dept 10 cm at different distance from the landfill; 0.5 km, 1 km, 2 km, 3 km and 4 km from the landfill. The samples were air dried for 1 week, sieved, grinded, and digest with mixture of HCI and HNO3 with ratio 1:3 in microwave digester. Then the samples were analysed using FAAS to determine their heavy metal concentrations. Three replicates of each sample were used to obtain the average value. The concentration of heavy metals studied were 40.15 mg/kg for Cr, 3585.77 mg/kg for Fe, 33.83 mg/kg for Pb and 567.8 mg/kg for Zn. From the concentration, their contamination in soil were evaluated with contamination factor. The high contamination for Cr was at 2 km distance from landfill where it was classes as considerable contamination, for Fe at distance 2 km and 3 km (considerable contamination), Pb at distance 3 Km (very high contamination) and Zn at 0.5 Km, 1 Km and 3 Km ( very high contamination). Chromium showed a minimal enrichment
factor at 0.5 km, Pb showed a moderate enrichment factor at 3 km where as Zn showed a moderate enrichment at 0.5 km, 1 km and 3 km at the sampling site.