Geochemical Assessment of Sediment Heavy Metal(loid) Concentrations in Lofa County, Northwestern Liberia: A Comparative Analysis of Average Shale and Upper Continental Crust Background Values.

Toxics · 2026 · PMC13211182 · PMID 42198562

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an increasing trendno p-value reported

The presence of Cu, Pb, Cr, Ni, Cd, As, and Hg in sediments in high concentrations reflects an increasing trend in mining activities, as well as manufacturing and industrialization, the use of fertilizers and pesticides in agricultural processes, and the discharge of domestic waste in streams and river systems [ 42 , 43 ].

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