Arsenic geochemistry and mineralogy as a function of particle-size in naturally arsenic-enriched soils

Naturally arsenic (As) enriched agricultural soils represent a significant global human health risk. In this study, As fractionation and mineralogy were investigated in naturally As-enriched agricultural soils and their corresponding sand, silt and clay fractions. Median As increased generally in the order (mg/kg)∶ silt (280) < bulk (314) < sand (323)

Keywords:

• Soil water
• Particle size
• Chemistry
• Geochemistry
• Arsenic

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