The seasonal comparison of As concentration between the dry season (August), semi‐wet season (September), and wet season (January) shows an increasing trend in concentration that may be ascribed to the wash‐off of toxins from the surface of the soil to nearby rivers.
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Comparative Seasonal Trends and Potential Health Impacts of Arsenic and Chromium in Surface Water after Adsorption Using Highly Dispersed Fe<sub>3</sub>O<sub>4</sub> Nanoparticles.
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