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August 19, 2025WaterOpen Access

Hydrogeochemistry of Surface Waters in the Iron Quadrangle, Brazil: High-Resolution Mapping of Potentially Toxic Elements in the Velhas and Paraopeba River Basins

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Widespread contamination by arsenic, cadmium, chromium, nickel, lead, and zinc is reported in surface waters, raising serious health concerns.
Statistical methods used include exploratory data analysis and cluster analysis to delineate contamination sources and concentration levels.
A dense spatial sampling network of 315 surface water points was established to create detailed geospatial distribution maps of pollutants.
This work establishes regional geochemical baselines and improves water governance strategies in mining-impacted regions.

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This analysis reveals contamination levels of potentially toxic elements in surface waters, highlighting mining impacts.

Costa et al. (2025) studied this question.

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