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- Supplementary material related to this article can be found online at https://doi.org/10.1016/j.rsma.2021.101676. The following is available online at www.mdpi.com/20763298/7/6/42/s1, Table S1: Metal enrichment factor (% EF) and geoaccumulation index (Igeo) estimated in sediment simple samples of Potengi river during dry (DS15 and DS16) and rainy (RS16) seasons of 2015 and 2016.