August 21, 2025LandOpen Access

A GIS and Multivariate Analysis Approach for Mapping Heavy Metals and Metalloids Contamination in Landfills: A Case Study from Al-Kharj, Saudi Arabia

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Analysis shows heavy metals and metalloids contamination in Al-Kharj landfills, indicating necessary remediation strategies.

Heavy metals concentrations were analyzed, showing that landfill Kj2 had higher levels of Cr, Ni, and Pb than Kj1.
Of 32 soil samples, 9.4% exceeded the WHO threshold for lead, highlighting potential risks in some areas.
Using gis mapping, landfill Kj1 expanded steadily until 2025, while Kj2 grew until 2022 before contracting.
Most samples showed ecological risk indices below 40, suggesting minimal contamination risks overall.

Alharbi et al. (2025) studied this question.

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