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Assessment of Heavy Metal Pollution to Soil Environment. A Case Study: Kieu Ky Landfill—Hanoi, Vietnam.
29/10/20 09:22AM
Ha Ngoc Hoang and Thai Thi Kim Nguyen. Sustainable Waste Management: Policies and Case Studies, Springer Singapore, Singapore, 2020.
Abstract: Leachate is the cause of heavy metal pollution at landfill environment. This contamination has the potential to have a significant impact on the soil and groundwater. This study was conducted to determine the concentration of heavy metal contamination in landfill environment. Soil samples were taken at various locations near the closure cell to determine heavy metal contamination by distance and depth. Analysis of heavy metal content was conducted by ICP-MS. Eight parameters of heavy metals were identified as indicators for pollution namely Cd, As, Hg, Cr, Fe, Cu, Zn and Pb. Heavy metal content is highest on the surface and decreases with depth. The heavy metal concentration is highest at nearest the cell. Among the elements at the highest values were arsenic (33 mg/kg) and chromium (293 mg/kg) and exceeded the QCVN 03-MT: 2015/BTNMT (National technical regulation on the allowable limits of heavy metals in the soils). Therefore, it is very crucial that necessary proper remediation or precautionary measure in order to prevent risks to human and the environment.File Attachments]|.