Evaluation of heavy metal contamination and health risk analysis in landfill and agricultural soils
DOI:
https://doi.org/10.5564/mjc.v26i53.3742Keywords:
Landfill, Heavy metals, Health risk assessment, Contaminated soil, Leachate runoffAbstract
This study assesses heavy metal contamination levels and health risks for residents living near the Bang Ban landfill and surrounding agricultural areas. A microwave digestion extraction method, an analysis through inductively coupled plasma atomic emission spectroscopy, and health risk assessments for heavy metals, including cadmium, copper, manganese, nickel, lead, and zinc, were conducted in accordance with United States Environmental Protection Agency standards. Results indicated that cadmium levels in agricultural soil, as well as copper and nickel levels in landfill areas, exceeded the established standards. The sources of heavy metal contamination in the study area were primarily attributed to leachate from landfills and the application of chemicals in agricultural practices. While the health risks associated with heavy metal exposure leading to non-cancer-related diseases, as calculated through the Hazard Index, were within acceptable limits, the assessment of total carcinogenic risk indicated a potential risk.
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Copyright (c) 2025 Somkid Tangkan, Cherlyn Sirisetpop, Sirapassorn Phanthasa, Orawan Chamnanphudsa, Yawanart Ngamnon, Wiriyabhorn Klomsungcharoen

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