Arsenic Oxidation by Flavin-Derived Reactive Species under Oxic and Anoxic Conditions

Kunfu Pi, Philippe Van Cappellen, Ekaterina Markelova & Peng Zhang
The objective of this research is to see how the redox and pH conditions impact the oxidation of arsenic (As) in the presence of reduced and oxidized riboflavin species. Batch experiments using simple dark-brown glass reactors were conducted under anoxic (glovebox filled with 97-98% nitrogen and 2-3% hydrogen gases) and oxic (purified air introduced to the reactors through tubes) conditions and a range of pre-designed solution pH from 5.2 to 9.0. Variables collected in this...
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