THE DISTRIBUTION AND SOLID-PHASE SPECIATION OF AS IN IRON-BASED ...

Courtesy Recent Science Inventory records from the EPA  Tue, 09/02/2008 - 10:03

Arsenic concentrations (Total Recoverable As by EPA Method 3051) and solid-phase speciation (by X-ray Absorption Near-Edge Spectroscopy-XANES) were assessed as a function of depth through Fe-media beds for two commercially available products from pilot-scale field tests.

These results were compared with data from solution (de-ionized water- DI-H2O) concentrations of As equilibrated with the Fe-media in an anoxic environment at 4°C.

These conditions (anoxic, 4°C) were employed in order to minimize variation (especially microbial effects) and lay a foundation for future...


 

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