Novel insights into the mechanisms for Sb mobilization in groundwater in a mining area: A colloid field study.

Colloids may play an important role in the geochemical cycle of antimony (Sb). However, the controlling behaviors of colloids on Sb fate in contaminated groundwater are not available. To investigate the effects of colloids on Sb mobility, groundwater samples from Xikuangshan Sb Mine's two main aquifers (the Ds aquifer and the Dx aquifer) were successively (ultra)filtered through progressively decreasing pore sizes (0.

Natural arsenic source, migration, and flux in a catchment on the Southern Tibetan Plateau.

Arsenic-affected aquifers are broadly found in floodplains of South Asia and Southeast Asia, which are supplied by rivers that originate from the Tibetan Plateau. Earlier investigations have ascertained the Arsenic (As) enrichment of river water in the Tibetan Plateau. However, the source, migration, and flux of As in catchment-scale have not been well constrained.