Jobelle Jayoma Capilitan, Ian Dominic Flormata Tabañag
Ni laterite exploration by surface mining is destructive to the local biological landscape. A sustainable approach is mine restoration using vegetation. Nonetheless, substantial concentrations of heavy metals are present in areas impacted by anthropogenic activities, such as mining. Crops may absorb heavy metals from the soil, which can have adverse effects on the land, water, and human health. This study assesses the accumulation of heavy metals (Cr, Cu, Ni, Mn, and Zn) in the soil and the consumable parts of crops (roots, leaves, and fruits) at the nickel laterite mining site in Tubay, Agusan del Norte, along with the potential health risks associated with human intake. The concentration of heavy metals in the soil and crops significantly exceeds the maximum permissible limit (MPL) set by the FAO and WHO. The concentration of heavy metals in the edible sections is ranked as follows: Mn > Ni > Zn > Cr > Cu. The Target Hazard Quotient (THQ) assessed non-carcinogenic risks, indicating that Cr, Cu, Mn, and Ni exceeded 1. The THQ number signifies significant health risks associated with prolonged consumption of the plant’s edible parts. © Universiti Putra Malaysia Press.
School of Engineering, University of San Carlos, Talamban, Cebu City, 6000, Philippines; Caraga State University, Butuan City, Philippines; Philippine Council for Industry, Energy, and Emerging Technology Research and Development, Department of Science and Technology (DOST-PCIEERD), Bicutan, Taguig City, 1631, Philippines
