Sediments arsenic retention

Rubinos, D., Barral, M.T., Ruiz, B. et al. (2003) Phosphate and arsenate retention in sediments of the Anll6ns River (northwest Spain). Water Science and Technology, 48(10), 159-66. 

TABLE 8.1. Retention Maximum for Arsenic on Various Solids Common to Soils and Sediments Derived from Adsorption Isotherms at Fixed pH... 

The concentrations of Cu, Zn, Fig, Cd, and other metals in sediment pore water are controlled by the solubility of metal sulfides in the reduced zone where sulfate reduction and sulfide formation is dominant. Change in redox condition upon burial results in a system where the growth of diagenetic copper, zinc, and arsenic sulfides control the distribution and partitioning of metals and arsenic in the sediment. In polluted sediments, sulfate reduction plays a key role in the formation and retention of sedimentary S as metal sulfides. The majority of the iron and manganese in coastal lake sediments is associated with sulfidic forms, especially in saline area high in available sulfate that is reduced to sulfide. 

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