Data for manuscripts Sequential extraction of heavy metals from sediments of the Maipo River basin, Chile

Sheet 1 presents the physicochemical parameters—pH, electrical conductivity (EC), total organic carbon (TOC), carbon monoxide (CO), boron, humidity, and iron/manganese oxides—for the analyzed sites (PP, MEL, SFM, and IM). Sheet 2 summarizes the metal fraction distribution (Labile, Oxide, MO, Residual) across these sites in mg/kg and percentages, illustrating their composition and partitioning.